Scuba Diving: Most Popular Articles
These articles are the most popular over the last month.
Equalization Basics
How do scuba divers equalize their ear pressure to avoid ear pain when diving? Learn about the Valsalva maneuver and other ear equalization techniques, as well as how to deal with common equalization problems.
How do scuba divers equalize their ear pressure to avoid ear pain when diving? Learn about the Valsalva maneuver and other ear equalization techniques, as well as how to deal with common equalization problems.
Under Pressure
Water pressure increases with depth. Water pressure effects almost all aspects of scuba diving, include equalization, buoyancy, bottom times, and the risk of decompression sickness (DCS). Review basic dive theory regarding depth and pressure in scuba diving.
Water pressure increases with depth. Water pressure effects almost all aspects of scuba diving, include equalization, buoyancy, bottom times, and the risk of decompression sickness (DCS). Review basic dive theory regarding depth and pressure in scuba diving.
Sea Urchins
Are sea urchins poisonous? Learn sea urchin facts, how to safely dive and snorkel urchins, and the first aid for sea urchin stings.
Are sea urchins poisonous? Learn sea urchin facts, how to safely dive and snorkel urchins, and the first aid for sea urchin stings.
Ear Barotrauma
Ear barotraumas are the most common injuries experienced by recreational scuba divers. Learn how to recognize, avoid and treat scuba diving ear barotraumas.
Ear barotraumas are the most common injuries experienced by recreational scuba divers. Learn how to recognize, avoid and treat scuba diving ear barotraumas.
Decompression Sickness
An overview of Decompression Sickness, including causes, types, symptoms, risk factors, prevention, and treatment.
An overview of Decompression Sickness, including causes, types, symptoms, risk factors, prevention, and treatment.
Start Scuba Diving
Are you ready to start scuba diving? Here is a step by step guide to learning to dive, including medical requirements, courses, certification agencies, basic dive theory and frequently asked questions.
Are you ready to start scuba diving? Here is a step by step guide to learning to dive, including medical requirements, courses, certification agencies, basic dive theory and frequently asked questions.
About Scuba Diving
An overview of scuba diving as a sport and profession. All about the what, who, why, where, and how of scuba.
An overview of scuba diving as a sport and profession. All about the what, who, why, where, and how of scuba.
Open Water Certification
Answers to your basic questions about Open Water Certification.
Answers to your basic questions about Open Water Certification.
DIN vs Yoke Regulators
What is the difference between DIN and Yoke scuba regulators? The difference between a DIN and a Yoke regulator is the way it attaches to a scuba tank.
What is the difference between DIN and Yoke scuba regulators? The difference between a DIN and a Yoke regulator is the way it attaches to a scuba tank.
How Deep Can You Dive?
The deepest dive on open circuit scuba was 1082 feet by Pascal Bernabe, however recreational scuba divers should not exceed 130 feet. Learn about the reasons for recreational scuba diving depth guidelines as well as the training is required to safely exceed them.
The deepest dive on open circuit scuba was 1082 feet by Pascal Bernabe, however recreational scuba divers should not exceed 130 feet. Learn about the reasons for recreational scuba diving depth guidelines as well as the training is required to safely exceed them.
Can I Scuba Dive?
Can I scuba dive? Learn about the prerequisites for scuba diving such as age, health, and swimming abilities and decide if you are able to scuba dive.
Can I scuba dive? Learn about the prerequisites for scuba diving such as age, health, and swimming abilities and decide if you are able to scuba dive.
Prevent Foggy Masks
Prevent scuba diving masks from fogging. New and used scuba diving masks need to be treated in different ways to prevent them from fogging.
Prevent scuba diving masks from fogging. New and used scuba diving masks need to be treated in different ways to prevent them from fogging.
Buoyancy Basics
An understanding of buoyancy is key to safe and easy scuba diving. While the concept of buoyancy may be confusing at first, it becomes clearer when we consider how buoyancy effects scuba divers and what divers need to know to properly control their buoyancy on a dive.
An understanding of buoyancy is key to safe and easy scuba diving. While the concept of buoyancy may be confusing at first, it becomes clearer when we consider how buoyancy effects scuba divers and what divers need to know to properly control their buoyancy on a dive.
Scuba Certification Agencies
An overview of popular scuba certification agencies, such as PADI, SSI, BSAC and NAUI. Explanation of what a scuba certification agency is, what is does, and the differences between agencies.
An overview of popular scuba certification agencies, such as PADI, SSI, BSAC and NAUI. Explanation of what a scuba certification agency is, what is does, and the differences between agencies.
Boyle's Law
Boyle's Law, PV=c, is useful in scuba diving because Boyle's Law helps scuba divers predict how air will expand and compress with water pressure. Read an explanation of Boyle's Law and how it applies to scuba diving.
Boyle's Law, PV=c, is useful in scuba diving because Boyle's Law helps scuba divers predict how air will expand and compress with water pressure. Read an explanation of Boyle's Law and how it applies to scuba diving.
Fitness to Scuba Dive
A guide to the basic levels of health and fitness required to scuba dive. Features a check list of common medical problems that may prevent you from being able to scuba dive.
A guide to the basic levels of health and fitness required to scuba dive. Features a check list of common medical problems that may prevent you from being able to scuba dive.
Steel vs Aluminum Tanks
What is the difference between steel and aluminum scuba tanks? Steel and aluminum scuba tanks differ in their weight, capacity, pressure ratings and buoyancy characteristics. Learn how the differences between steel and aluminum tanks effect scuba divers.
What is the difference between steel and aluminum scuba tanks? Steel and aluminum scuba tanks differ in their weight, capacity, pressure ratings and buoyancy characteristics. Learn how the differences between steel and aluminum tanks effect scuba divers.
6ThingsAboutMasks
Scuba masks are one of the most important pieces of scuba diving gear. Here are six important things to know about scuba masks.
Scuba masks are one of the most important pieces of scuba diving gear. Here are six important things to know about scuba masks.
Caribbean Fish ID
Reef fish identification guide for scuba divers to common and interesting species in Florida and the Caribbean. Learn to identify Sergeant Majors (Abudefduf saxatilis), Porkfish (Anisotremus virginicus), French Grunts (Haemulon flavolineatum) and many more reef fish species.
Reef fish identification guide for scuba divers to common and interesting species in Florida and the Caribbean. Learn to identify Sergeant Majors (Abudefduf saxatilis), Porkfish (Anisotremus virginicus), French Grunts (Haemulon flavolineatum) and many more reef fish species.
Becky Kagan Schott
Interview with professional underwater videographer Becky Kagan Schott. Becky Kagan Schott speaks about her adventures and gives advice to those aspiring to a career in underwater videography.
Interview with professional underwater videographer Becky Kagan Schott. Becky Kagan Schott speaks about her adventures and gives advice to those aspiring to a career in underwater videography.
How Long Does a Tank Last
An average scuba diver on a forty foot dive can stay underwater about 45 minutes. However, the length of time the air in a scuba tank lasts will vary depending upon depth, tank volume, and the diver's air consumption rate.
An average scuba diver on a forty foot dive can stay underwater about 45 minutes. However, the length of time the air in a scuba tank lasts will vary depending upon depth, tank volume, and the diver's air consumption rate.
Asthma Diving
Can asthma sufferers scuba dive? It can be extremely dangerous for some asthmatics to dive. Learn why asthma is sometimes a contraindication for scuba diving.
Can asthma sufferers scuba dive? It can be extremely dangerous for some asthmatics to dive. Learn why asthma is sometimes a contraindication for scuba diving.
No-Deco Limit
A no-decompression limit (NDL) is a time limit for a scuba dive. If a diver exceeds the no-decompression limit for his dive, he can no longer ascend directly to the surface.
A no-decompression limit (NDL) is a time limit for a scuba dive. If a diver exceeds the no-decompression limit for his dive, he can no longer ascend directly to the surface.
Open Water Swimming Tests
I frequently get questions on the difficulty of the water skills tests. The good news is that they're not difficult at all, and I've written some tips below to make them even easier.
I frequently get questions on the difficulty of the water skills tests. The good news is that they're not difficult at all, and I've written some tips below to make them even easier.
Mask Clearing
A scuba diver signals that she is ready to begin the open water mask clearing skill. Mask clearing is an important open water skill.
A scuba diver signals that she is ready to begin the open water mask clearing skill. Mask clearing is an important open water skill.
Dive Theory Hub
Review basic concepts essential to safe and easy scuba diving. Here is a list of important dive theory that all scuba divers need to know.
Review basic concepts essential to safe and easy scuba diving. Here is a list of important dive theory that all scuba divers need to know.
Nitrox Benefits FAQ
What are five benefits to scuba diving with nitrox? Why is the use of nitrox in recreational diving becoming more and more popular?
What are five benefits to scuba diving with nitrox? Why is the use of nitrox in recreational diving becoming more and more popular?
The 5 Basic Parts of a Scuba Regulator
Lean about the different parts of a scuba diving regulator. There are 5 basic scuba diving regulator parts, the first stage, seconds stage, alternate second stage, low pressure inflator hose, and submersible pressure gauge.
Lean about the different parts of a scuba diving regulator. There are 5 basic scuba diving regulator parts, the first stage, seconds stage, alternate second stage, low pressure inflator hose, and submersible pressure gauge.
Dangerous Fish and Animals
Which fish and sea animals are dangerous to scuba divers, and which are not? Click through this list of commonly feared sea animals and learn which ones are actually dangerous.
Which fish and sea animals are dangerous to scuba divers, and which are not? Click through this list of commonly feared sea animals and learn which ones are actually dangerous.
What is Deep Diving?
Learn all about the thrilling world of deep diving.
Learn all about the thrilling world of deep diving.
Should Kids Scuba Dive
Should kids be allowed to scuba dive, and at what age? Read some of the arguments for and against children diving, and add your own opinion.
Should kids be allowed to scuba dive, and at what age? Read some of the arguments for and against children diving, and add your own opinion.
Nitrogen Absorption
During a dive, a scuba diver's body absorbs nitrogen. Understand the concept of nitrogen absorption when scuba diving using the sponge analogy.
During a dive, a scuba diver's body absorbs nitrogen. Understand the concept of nitrogen absorption when scuba diving using the sponge analogy.
Partial Pressure
What is partial pressure and what does it have to do with scuba diving? Partial pressure is a way that divers measure the concentration of a gas. Knowing the partial pressure of a gas is important because the physiological and psychological effects of the many gasses change with an increase in partial pressure.
What is partial pressure and what does it have to do with scuba diving? Partial pressure is a way that divers measure the concentration of a gas. Knowing the partial pressure of a gas is important because the physiological and psychological effects of the many gasses change with an increase in partial pressure.
Skin Bends
Skin bends, or cutaneous decompression sickness, is a frequently overlooked form of decompression sickness in scuba divers. Divers should be able to recognize the common sings and symptoms of skin bends as they may require treatment and can precede other, more serious types of decompression sickness.
Skin bends, or cutaneous decompression sickness, is a frequently overlooked form of decompression sickness in scuba divers. Divers should be able to recognize the common sings and symptoms of skin bends as they may require treatment and can precede other, more serious types of decompression sickness.
How to Wash Your Gear
One of the most important skills you'll learn as a diver is how to properly wash your scuba equipment. It's very important to wash your scuba equipment thoroughly after every day of diving. Washing your scuba gear ensures that it all performs safely as it was intended to and it will also prolong its life.
One of the most important skills you'll learn as a diver is how to properly wash your scuba equipment. It's very important to wash your scuba equipment thoroughly after every day of diving. Washing your scuba gear ensures that it all performs safely as it was intended to and it will also prolong its life.
Pulmonary Barotrauma
Every scuba diver is at risk of a pulmonary barotrauma if he holds his breath underwater. However, other conditions and actions can cause a pulmonary barotrauma when scuba diving. Learn how to avoid and recognize a pulmonary barotrauma.
Every scuba diver is at risk of a pulmonary barotrauma if he holds his breath underwater. However, other conditions and actions can cause a pulmonary barotrauma when scuba diving. Learn how to avoid and recognize a pulmonary barotrauma.
Oxygen Toxicity
Scuba divers risk oxygen toxicity when they expose themselves to high partial pressures of oxygen. Central Nervous System (CNS) Oxygen Toxicity causes convulsions, unconsciousness and even death in scuba divers. Pulmonary Oxygen Toxicity causes coughing, difficulty breathing and eventual failure of the lungs, and effects mainly technical scuba divers.
Scuba divers risk oxygen toxicity when they expose themselves to high partial pressures of oxygen. Central Nervous System (CNS) Oxygen Toxicity causes convulsions, unconsciousness and even death in scuba divers. Pulmonary Oxygen Toxicity causes coughing, difficulty breathing and eventual failure of the lungs, and effects mainly technical scuba divers.
Oxygen Toxicity FAQ
Oxygen toxicity is a medical condition caused by exposure to oxygen at high pressures. Oxygen toxicity may be experienced by scuba divers who dive beyond recreational dive limits, used mixed gasses such as enriched air nitrox, and decompress using oxygen. These divers must take precautions to avoid oxygen toxicity.
Oxygen toxicity is a medical condition caused by exposure to oxygen at high pressures. Oxygen toxicity may be experienced by scuba divers who dive beyond recreational dive limits, used mixed gasses such as enriched air nitrox, and decompress using oxygen. These divers must take precautions to avoid oxygen toxicity.
Pre-Dive Safety Check
Do you consider flying dangerous? Most people will agree that while there are certain risks associated
Do you consider flying dangerous? Most people will agree that while there are certain risks associated
TravelBCDsII
Lightweight and Compact travel buoyancy compensators (BCDs) are making dive travel easier. Three great travel BCDs are the Aqualung Zuma, the Cressi Travel Light, and the Seacsub Airone are now on the market.
Lightweight and Compact travel buoyancy compensators (BCDs) are making dive travel easier. Three great travel BCDs are the Aqualung Zuma, the Cressi Travel Light, and the Seacsub Airone are now on the market.
MOD
A Maximum Operating Depth (MOD) is a depth limit based on the concentration of oxygen in a scuba diver's tank. Learn about the situations in which a scuba diver must calculate a maximum operating depth and see the MOD formula.
A Maximum Operating Depth (MOD) is a depth limit based on the concentration of oxygen in a scuba diver's tank. Learn about the situations in which a scuba diver must calculate a maximum operating depth and see the MOD formula.
Scubapro Twinjet Fins
A full review of Scubapro's top of the line split fins - Scubapro Twinjets.
A full review of Scubapro's top of the line split fins - Scubapro Twinjets.
OutofAirPriority
During the PADI Open Water Course , one question causes student divers to tear their hair out in confusion.
During the PADI Open Water Course , one question causes student divers to tear their hair out in confusion.
Safety Stop
In scuba diving, a safety stop is a three to five minute stop made between fifteen and twenty feet during ascent. Recreational scuba divers should make a safety stop at the end of every dive.
In scuba diving, a safety stop is a three to five minute stop made between fifteen and twenty feet during ascent. Recreational scuba divers should make a safety stop at the end of every dive.
Open Water Skills
A description of each of the water skills taught during the Open Water Diver certification course.
A description of each of the water skills taught during the Open Water Diver certification course.
PeeInWetsuit
Scuba divers commonly feel the need to pee in their wetsuits. This is a normal reaction to the underwater environment. Cold water immersion diaresis and the weightlessness of being underwater combine to increase a diver's urine production.
Scuba divers commonly feel the need to pee in their wetsuits. This is a normal reaction to the underwater environment. Cold water immersion diaresis and the weightlessness of being underwater combine to increase a diver's urine production.
Scuba Fins Styles and Features
Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Parts of a Scuba Diving Regulator
Lean about the different parts of a scuba diving regulator. There are 5 basic scuba diving regulator parts, the first stage, seconds stage, alternate second stage, low pressure inflator hose, and submersible pressure gauge.
Lean about the different parts of a scuba diving regulator. There are 5 basic scuba diving regulator parts, the first stage, seconds stage, alternate second stage, low pressure inflator hose, and submersible pressure gauge.
Five Point Descent
The five point descent for scuba diving is: signal, orientation, regulator, time and descend. Here is an illustrated guide to the steps of the five point descent for scuba diving.
The five point descent for scuba diving is: signal, orientation, regulator, time and descend. Here is an illustrated guide to the steps of the five point descent for scuba diving.
Nitrox Risks
Scuba diving with enriched air nitrox has limitations and risks. The use of enriched air nitrox increases the risk of oxygen toxicity and explosion. Considerations for scuba diving with enriched air nitrox include depth, cost, availability, complicated dive planning, and the necessity of special gear.
Scuba diving with enriched air nitrox has limitations and risks. The use of enriched air nitrox increases the risk of oxygen toxicity and explosion. Considerations for scuba diving with enriched air nitrox include depth, cost, availability, complicated dive planning, and the necessity of special gear.
StingrayInjuries
Learn about stingray facts, information, how to scuba dive with them safely, and first aid for stings. Stingrays are not dangerous unless they feel threatened,
Learn about stingray facts, information, how to scuba dive with them safely, and first aid for stings. Stingrays are not dangerous unless they feel threatened,
Air Consumption Rates
This tutorial leads divers through the basics of air consumption rates for diving. Learn about SAC Rates, RMV Rates, how to calculate them , and use them to plan a dive.
This tutorial leads divers through the basics of air consumption rates for diving. Learn about SAC Rates, RMV Rates, how to calculate them , and use them to plan a dive.
Fin Pivot: Achieve Neutral Buo
A diver inhales to ascend during the fin pivot scuba certification skill. Learn about the Fin Pivot and other scuba diving skills and scuba certification courses.
A diver inhales to ascend during the fin pivot scuba certification skill. Learn about the Fin Pivot and other scuba diving skills and scuba certification courses.
How to Try on a Scuba Mask
Different parts of a scuba diving mask with labels.
Different parts of a scuba diving mask with labels.
Is Scuba Diving Safe
Is scuba diving a safe activity? Read statistics and facts to put the risks of diving in perspective. Scuba diving is not dangerous if simple safety guidelines and procedures are followed.
Is scuba diving a safe activity? Read statistics and facts to put the risks of diving in perspective. Scuba diving is not dangerous if simple safety guidelines and procedures are followed.
Eyesight and Scuba Diving
Can people with poor eyesight scuba dive? Absolutely! Divers may use prescription masks, soft contact lenses, stick-in bifocals, and even laser eye surgery to ensure clear vision underwater.
Can people with poor eyesight scuba dive? Absolutely! Divers may use prescription masks, soft contact lenses, stick-in bifocals, and even laser eye surgery to ensure clear vision underwater.
First Stage
See a diagram of the basic parts of a scuba diving regulator first stage. Learn about the different parts of s scuba diving regulator.
See a diagram of the basic parts of a scuba diving regulator first stage. Learn about the different parts of s scuba diving regulator.
BackInflateVSVEstBCD
What is the difference between a vest-style and a back inflation BCD?
What is the difference between a vest-style and a back inflation BCD?
Vomit
Can you vomit or throw up underwater. If you get seasick on boats, you maybe worried about getting seasick underwater. While becoming seasick underwater is highly unlikely, here is information that scuba divers should know about vomiting underwater.
Can you vomit or throw up underwater. If you get seasick on boats, you maybe worried about getting seasick underwater. While becoming seasick underwater is highly unlikely, here is information that scuba divers should know about vomiting underwater.
Discover Scuba Diving
An overview of the PADI Discover Scuba Diving program. A program that allows you to try diving under close supervision of a professional dive instructor.
An overview of the PADI Discover Scuba Diving program. A program that allows you to try diving under close supervision of a professional dive instructor.
3 Pieces of Gear
There are three pieces of scuba gear that every scuba student and certified scuba diver should own. Learn about the basic styles and features of the three most important pieces of scuba gear.
There are three pieces of scuba gear that every scuba student and certified scuba diver should own. Learn about the basic styles and features of the three most important pieces of scuba gear.
Online Courses
How can you learn to scuba dive online? Online scuba diving certification courses allow student divers to save time by completing the theory portion of scuba diving courses online.
How can you learn to scuba dive online? Online scuba diving certification courses allow student divers to save time by completing the theory portion of scuba diving courses online.
Open Water Course Formats
Several different formats of the Open Water Scuba Diver Course exist. Students considering enrolling in a scuba certification course should consider the different course options such as a referral courses and online learning options.
Several different formats of the Open Water Scuba Diver Course exist. Students considering enrolling in a scuba certification course should consider the different course options such as a referral courses and online learning options.
Seahorse Camouflage
Seahorses, like the Thorny Seahorse in this photo, can change colors and even textures to camouflage with their environment. See photos and learn facts about seahorses and pipefish in this scuba diving photo gallery.
Seahorses, like the Thorny Seahorse in this photo, can change colors and even textures to camouflage with their environment. See photos and learn facts about seahorses and pipefish in this scuba diving photo gallery.
Nitrogen Narcosis Sympt
Nitrogen narcosis affects most scuba divers at depths below 100 feet. Also known as inert gas narcosis, rapture of the deep, and the martini effect, nitrogen narcosis can be dangerous to divers. Learn about the causes, symptoms, and treatment for nitrogen narcosis here.
Nitrogen narcosis affects most scuba divers at depths below 100 feet. Also known as inert gas narcosis, rapture of the deep, and the martini effect, nitrogen narcosis can be dangerous to divers. Learn about the causes, symptoms, and treatment for nitrogen narcosis here.
VenturiEffect
What do you notice about the design of a regulator second stage ? At first glance a diver may notice
What do you notice about the design of a regulator second stage ? At first glance a diver may notice
Flying After Diving Guidelines
The current recommended surface intervals before flying after diving.
The current recommended surface intervals before flying after diving.
Regal Angelfish
Learn to identify the Regal Angelfish, Pygoplites diacanthus. See colorful photos of different angelfish from around the world. Angelfish come in a stunning variety of shape, sizes and colors.
Learn to identify the Regal Angelfish, Pygoplites diacanthus. See colorful photos of different angelfish from around the world. Angelfish come in a stunning variety of shape, sizes and colors.
Controlled Descent
Many divers (even certified scuba divers) find descent the most stressful part of the dive because they have trouble controlling the descent. Learn techniques and hints to have a more enjoyable descent.
Many divers (even certified scuba divers) find descent the most stressful part of the dive because they have trouble controlling the descent. Learn techniques and hints to have a more enjoyable descent.
Buoyancy Compensator (BCD) Styles and Features
Learn about the different styles and features of buoyancy compensators or BCDs. Scuba divers purchasing a buoyancy compensators should understand the different styles and features of buoyancy compensators before buying one.
Learn about the different styles and features of buoyancy compensators or BCDs. Scuba divers purchasing a buoyancy compensators should understand the different styles and features of buoyancy compensators before buying one.
Jellyfish Stings
Jellyfish are more likely to sting swimmers and snorkelers than scuba divers because most species stay relatively close to the surface. However, divers do occasionally experience jellyfish stings. Learn jellyfish facts, symptoms of a sting, and information about first aid treatments/remedies.
Jellyfish are more likely to sting swimmers and snorkelers than scuba divers because most species stay relatively close to the surface. However, divers do occasionally experience jellyfish stings. Learn jellyfish facts, symptoms of a sting, and information about first aid treatments/remedies.
Reverse Block
What is a reverse block in scuba diving? If a diver experiences increased pressure in his ears during ascent, the worst thing he can do is to continue to go up.
What is a reverse block in scuba diving? If a diver experiences increased pressure in his ears during ascent, the worst thing he can do is to continue to go up.
Open Water Referral
The open water referral course allows divers to earn their scuba diving certification in segments. Student divers complete the theory and pool practice with a local dive shop before traveling anywhere in the world to finish their open-water check out dives.
The open water referral course allows divers to earn their scuba diving certification in segments. Student divers complete the theory and pool practice with a local dive shop before traveling anywhere in the world to finish their open-water check out dives.
BCD Hub Page
Here is an easy starting point to learn about BCDs and Scuba Diving. This page discusses: ⢠What Does
Here is an easy starting point to learn about BCDs and Scuba Diving. This page discusses: ⢠What Does
Scuba Fins With Closed Heels
Images of scuba fins with closed heels. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Images of scuba fins with closed heels. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
SharkDivingDangers
Is scuba diving with sharks dangerous? No! In fact, a person is more likely to die falling out of his bed or injure himself using the toilet than to be the victim of a shark attack.
Is scuba diving with sharks dangerous? No! In fact, a person is more likely to die falling out of his bed or injure himself using the toilet than to be the victim of a shark attack.
What's the Difference Between These Masks?
This guide to how to choose a scuba diving mask will familiarize you with the common mask styles and features. Never purchase a mask before learning about the different types available. There are such a variety of high quality masks available that there is sure to be one that is right for you!
This guide to how to choose a scuba diving mask will familiarize you with the common mask styles and features. Never purchase a mask before learning about the different types available. There are such a variety of high quality masks available that there is sure to be one that is right for you!
Mask Removal and Replacement
How to perform the Open Water skill 'Mask Removal and Replacement'
How to perform the Open Water skill 'Mask Removal and Replacement'
BOOBIES
Can you scuba dive with breast implants? Yes, after an appropriate recovery time, scuba diving after a breast augmentation surgery is safe. How do breast implants affect buoyancy? Do breast implants compress underwater?
Can you scuba dive with breast implants? Yes, after an appropriate recovery time, scuba diving after a breast augmentation surgery is safe. How do breast implants affect buoyancy? Do breast implants compress underwater?
Photo of a Bull Shark or Zambezi Shark
Photograph of a Bull Shark (also known as a Zambezi Shark),Carcharhinus leucas, taken on a Mozambique diving trip. Mozambique diving offers a wide variety of marine life, including the Bull Shark.
Photograph of a Bull Shark (also known as a Zambezi Shark),Carcharhinus leucas, taken on a Mozambique diving trip. Mozambique diving offers a wide variety of marine life, including the Bull Shark.
Advanced Course Organization
Take the next step in scuba diving! Learn about how to advance your scuba diving certification with courses from 5 of the most popular scuba diving organizations. Learn what the required prerequisites and age limits for different scuba diving certification agencies.
Take the next step in scuba diving! Learn about how to advance your scuba diving certification with courses from 5 of the most popular scuba diving organizations. Learn what the required prerequisites and age limits for different scuba diving certification agencies.
Proper Weighting
How to perform the Open Water skill 'Proper Weighting'
How to perform the Open Water skill 'Proper Weighting'
RefresherCourse
Refresher courses make scuba diving safer and more enjoyable. Certified scuba divers should enroll in a refresher course to review emergency skills and important dive theory after a period of diving inactivity.
Refresher courses make scuba diving safer and more enjoyable. Certified scuba divers should enroll in a refresher course to review emergency skills and important dive theory after a period of diving inactivity.
Suunto D9
A full review of the Suunto D9 Dive Computer
A full review of the Suunto D9 Dive Computer
Boat Diving Etiquette
How can you be on your best behavior during your scuba diving trip. Here are guidelines and tips on proper boat etiquette to be sure that you avoid alienating everyone on board.
How can you be on your best behavior during your scuba diving trip. Here are guidelines and tips on proper boat etiquette to be sure that you avoid alienating everyone on board.
Bearded Fireworms
Bearded Fireworms- Bearded Fireworms are beautiful, but can be quite painful to touch. Divers should stay well away from bearded fireworms, and be aware of appropriate first aid for bearded fireworm stings.
Bearded Fireworms- Bearded Fireworms are beautiful, but can be quite painful to touch. Divers should stay well away from bearded fireworms, and be aware of appropriate first aid for bearded fireworm stings.
Primary Second Stage
Learn about the different parts of a scuba diving regulator second stage. See photos and read a description of the parts of a seconds stage scuba regulator.
Learn about the different parts of a scuba diving regulator second stage. See photos and read a description of the parts of a seconds stage scuba regulator.
Enriched Air
What is enriched air nitrox? Enriched air nitrox is a mixture of oxygen and nitrogen that has an oxygen percentage greater that 21%. Enriched air nitrox is used by scuba divers in recreational and technical diving.
What is enriched air nitrox? Enriched air nitrox is a mixture of oxygen and nitrogen that has an oxygen percentage greater that 21%. Enriched air nitrox is used by scuba divers in recreational and technical diving.
Split Fins
Images of Split Fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Images of Split Fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Oceanic Probe LX
A full review of the Oceanic Probe LX Buoyancy Control Device (BCD).
A full review of the Oceanic Probe LX Buoyancy Control Device (BCD).
Carbon Dioxide
High levels of carbon dioxide (hypercapnia) can cause a variety of dangerous symptoms in scuba divers, such as narcosis and unconsciousness. However, high carbon dioxide levels are avoidable if a scuba diver follows safe diving practices and avoids behavior that may predispose him to hypercapnia.
High levels of carbon dioxide (hypercapnia) can cause a variety of dangerous symptoms in scuba divers, such as narcosis and unconsciousness. However, high carbon dioxide levels are avoidable if a scuba diver follows safe diving practices and avoids behavior that may predispose him to hypercapnia.
Oceanic Atom 2.0
A full review of the Oceanic Atom 2.0 Dive Computer.
A full review of the Oceanic Atom 2.0 Dive Computer.
Snorkels With Purge Valves
Learn about snorkels with purge valves. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Learn about snorkels with purge valves. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Regulator Recovery
Photos and explanation not holding your breath during the regulator recovery skill. Regulator recovery is taught in most scuba certification courses and could someday save your life.
Photos and explanation not holding your breath during the regulator recovery skill. Regulator recovery is taught in most scuba certification courses and could someday save your life.
Submersible Pressure Gauge and Console
Learn about the submersible pressure gauge (SPG) and other gauges located on a scuba diving regulators console. See a digram of a scuba diving SPG and gauge console.
Learn about the submersible pressure gauge (SPG) and other gauges located on a scuba diving regulators console. See a digram of a scuba diving SPG and gauge console.
Purple and Orange Nudibranch
Photos of nudibranchs with oral appendages. Scuba diving photos of colorful nudibranchs and sea slugs taken all over the world. Nudibranchs and sea slugs have developed exterior gills and other clever ways of harvesting oxygen from their surroundings, many of them quite beautiful.
Photos of nudibranchs with oral appendages. Scuba diving photos of colorful nudibranchs and sea slugs taken all over the world. Nudibranchs and sea slugs have developed exterior gills and other clever ways of harvesting oxygen from their surroundings, many of them quite beautiful.
Tips for Cold Water Diving
Cold water diving is as comfortable and enjoyable as warm water diving when the correct equipment and procedures are used. Here are 6 tips to help scuba divers transition to cold water diving.
Cold water diving is as comfortable and enjoyable as warm water diving when the correct equipment and procedures are used. Here are 6 tips to help scuba divers transition to cold water diving.
Hair
Long hair can be very annoying when scuba diving. A French braid works well o keep a diver's hair out of her face. Here are my tips for securing long hair when scuba diving.
Long hair can be very annoying when scuba diving. A French braid works well o keep a diver's hair out of her face. Here are my tips for securing long hair when scuba diving.
Fire Coral ID
Learn to identify fire coral stings. Divers must learn to identify fire coral stings to properly treat them.
Learn to identify fire coral stings. Divers must learn to identify fire coral stings to properly treat them.
Dirty
This morning, I sat in front of my clients and spit. How many people can say that? They weren't offended;
This morning, I sat in front of my clients and spit. How many people can say that? They weren't offended;
Scuba Fins With Open Heels
Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
CESA
A scuba diver touches her weight belt to remind herself to establish positive buoyancy once she reaches the surface during the Controlled Emergency Swimming Ascent (CESA). The Controlled Emergency Swimming Ascent is an important open water scuba diving certification skill.
A scuba diver touches her weight belt to remind herself to establish positive buoyancy once she reaches the surface during the Controlled Emergency Swimming Ascent (CESA). The Controlled Emergency Swimming Ascent is an important open water scuba diving certification skill.
Emergency Deco FAQ
What are the emergency decompression rules for scuba diving? Guidelines for emergency decompression state that a scuba diver should remain at fifteen feet for either eight or fifteen minutes, depending upon how long he exceed his no-decompression limit.
What are the emergency decompression rules for scuba diving? Guidelines for emergency decompression state that a scuba diver should remain at fifteen feet for either eight or fifteen minutes, depending upon how long he exceed his no-decompression limit.
WhyDoesAWetsuitWork
A wetsuit helps to keep a scuba diver warm underwater by trapping a thin layer of water inside the wetsuit, which his body heats up. Learn more about how a wetsuit works here.
A wetsuit helps to keep a scuba diver warm underwater by trapping a thin layer of water inside the wetsuit, which his body heats up. Learn more about how a wetsuit works here.
Alternate Second Stage
See a diagram and explanation of the parts of a scuba diving regulator second stage. Learn about the different parts of a scuba diving regulator.
See a diagram and explanation of the parts of a scuba diving regulator second stage. Learn about the different parts of a scuba diving regulator.
Turtle Fins
Images of turtle fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Images of turtle fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Free Flowing Regulator
How to perform the Open Water skill 'Free Flowing Regulator'
How to perform the Open Water skill 'Free Flowing Regulator'
Blade Fins
Images of Blade Scuba Fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Images of Blade Scuba Fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Technical Diving
Technical diving is any sort of scuba diving that allows divers to exceed recreational limits. Cave diving, deep diving, and trimix diving are all examples of technical diving.
Technical diving is any sort of scuba diving that allows divers to exceed recreational limits. Cave diving, deep diving, and trimix diving are all examples of technical diving.
Colorful Fins
Colorful Scuba Fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Colorful Scuba Fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Freediving Fins
Images of freediving fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Images of freediving fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Grand Cenote
See photos of scuba diving in Grand Cenote in Mexico. Read descriptions and see photos of cavern diving in Mexico's famous cenotes.
See photos of scuba diving in Grand Cenote in Mexico. Read descriptions and see photos of cavern diving in Mexico's famous cenotes.
Tobermory Profile
Scuba divers in Tobermory, Canada, can visit historic shipwrecks in clear water. Divers must bring their sense of adventure because these shipwrecks lay at the bottom of chilly Lake Huron.
Scuba divers in Tobermory, Canada, can visit historic shipwrecks in clear water. Divers must bring their sense of adventure because these shipwrecks lay at the bottom of chilly Lake Huron.
What is Night Diving?
It's different down there at night. The first time you descend into the darkness you'll realize that it's almost a completely different world at night. Learn all about the exciting scuba diving specialty - Night Diving.
It's different down there at night. The first time you descend into the darkness you'll realize that it's almost a completely different world at night. Learn all about the exciting scuba diving specialty - Night Diving.
Water In Mask
Are you afraid of getting water in your mask when scuba diving? You are not alone! Here are tips that I use to help my scuba diving students overcome the common fear having water in the mask while diving.
Are you afraid of getting water in your mask when scuba diving? You are not alone! Here are tips that I use to help my scuba diving students overcome the common fear having water in the mask while diving.
Divers Dictionary
Definitions of scuba diving terminology and jargon. Use this glossary and encyclopedia to easily find definitions and and explanations of important scuba diving concepts. Now it's your turn to talk like an experienced diver using proper terms and diver slang!
Definitions of scuba diving terminology and jargon. Use this glossary and encyclopedia to easily find definitions and and explanations of important scuba diving concepts. Now it's your turn to talk like an experienced diver using proper terms and diver slang!
Snorkeling Fins
Images of snorkeling fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Images of snorkeling fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Manta Ray
Information about the Manta Ray - the biggest Ray in the ocean and one of the most spectacularly amazing marine creatures often encountered by divers.
Information about the Manta Ray - the biggest Ray in the ocean and one of the most spectacularly amazing marine creatures often encountered by divers.
Dry Top Snorkels
Learn about dry top snorkels. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Learn about dry top snorkels. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Semi-Dry Snorkels
Learn about semi-dry snorkels. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Learn about semi-dry snorkels. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Low Volume/ Free Diving Masks
Low volume scuba diving masks are easy to clear and equalize. Learn about different styles and features of scuba diving masks.
Low volume scuba diving masks are easy to clear and equalize. Learn about different styles and features of scuba diving masks.
Flexible VS Stiff Fins
Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Recreational Diving
Recreational diving is defined as scuba diving within certain limits. Recreational diving is less than 130 feet deep, does not require decompression stops, and allows the diver to ascend directly to the surface.
Recreational diving is defined as scuba diving within certain limits. Recreational diving is less than 130 feet deep, does not require decompression stops, and allows the diver to ascend directly to the surface.
Ascent Rates
What is the maximum safe ascent rate for scuba diving? Some diving organizations list the maximum safe ascent rate as 30 feet per a minute, while others list it as 60 feet per a minute. What is the safest ascent rate?
What is the maximum safe ascent rate for scuba diving? Some diving organizations list the maximum safe ascent rate as 30 feet per a minute, while others list it as 60 feet per a minute. What is the safest ascent rate?
Seahorse Reproduction
Seahorses are oviviparous, meaning that they incubate their eggs insides their bodies. See photos and learn facts about Seahorses and Pipefish in this Scuba Diving Photo Gallery.
Seahorses are oviviparous, meaning that they incubate their eggs insides their bodies. See photos and learn facts about Seahorses and Pipefish in this Scuba Diving Photo Gallery.
Low Pressure Inflator Hose
See a diagram of a scuba diving low pressure inflator hose. Learn about the different parts of a scuba diving regulator.
See a diagram of a scuba diving low pressure inflator hose. Learn about the different parts of a scuba diving regulator.
Balanced Regulator
What is the difference between balanced and unbalanced regulators. Decide whether you should buy a balanced or an unbalanced regulator.
What is the difference between balanced and unbalanced regulators. Decide whether you should buy a balanced or an unbalanced regulator.
Spit Prevents Mask Fog
Why does spit keep a mask from fogging? Spit keeps a scuba diving mask from fogging because it acts as a surfactant . . .
Why does spit keep a mask from fogging? Spit keeps a scuba diving mask from fogging because it acts as a surfactant . . .
Back Plate and Wing
Learn about the back plate and wings style of buoyancy compensators or BCDs. Scuba divers purchasing a buoyancy compensator should understand the different styles and features of buoyancy compensators before buying one.
Learn about the back plate and wings style of buoyancy compensators or BCDs. Scuba divers purchasing a buoyancy compensator should understand the different styles and features of buoyancy compensators before buying one.
Relax
Before a diver can enjoy the underwater world, he must feel relaxed and in control. Here is how to relax before a dive.
Before a diver can enjoy the underwater world, he must feel relaxed and in control. Here is how to relax before a dive.
Innovative Fins
Innovative scuba fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Innovative scuba fins. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Challenges and Threats
Seahorse populations around the world are in a steady decline caused by overfishing, habitat destruction, and pollution. Learn more about seahorses and pipefish in this scuba diving photo gallery.
Seahorse populations around the world are in a steady decline caused by overfishing, habitat destruction, and pollution. Learn more about seahorses and pipefish in this scuba diving photo gallery.
A Variety of High Quality Scuba Diving Masks
High quality scuba diving masks shoudl be made of tempered glass and silicon.
High quality scuba diving masks shoudl be made of tempered glass and silicon.
Different Fin Strap Attachments
Photos of classic and spring strap attachments. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Photos of classic and spring strap attachments. Photos and explanation of the features an styles of scuba diving fins. Learn about scuba fins before deciding on a purchase.
Zebra Shark
Information about the Zebra shark, also known as a Leopard shark. This shark inhabits with waters of the Indo-Pacific between Japan and the Red Sea.
Information about the Zebra shark, also known as a Leopard shark. This shark inhabits with waters of the Indo-Pacific between Japan and the Red Sea.
Giant Stride Entry
How to perform the open water skill - Giant Stride Entry.
How to perform the open water skill - Giant Stride Entry.
Ascending
How to perform the open water skill - Ascending.
How to perform the open water skill - Ascending.
Hyperventilation
What should you do if you hyperventilate when scuba diving. Here is advice on how to deal with shortness of breath caused by hyperventilation or exertion underwater.
What should you do if you hyperventilate when scuba diving. Here is advice on how to deal with shortness of breath caused by hyperventilation or exertion underwater.
4VisiblityFactors
What are factors that effect the visibility underwater when scuba diving? The PADI knowledge review lists several factors that influence the clarity of water, learn about these and other factors such as salinity.
What are factors that effect the visibility underwater when scuba diving? The PADI knowledge review lists several factors that influence the clarity of water, learn about these and other factors such as salinity.
Trim and Scuba Diving Part 1
Trim refers to a scuba diver's body position. Proper trim is a completely horizontal position, with arms extended and fins elevated. Learn about the value of proper trim, why it is important to both recreational and technical scuba divers.
Trim refers to a scuba diver's body position. Proper trim is a completely horizontal position, with arms extended and fins elevated. Learn about the value of proper trim, why it is important to both recreational and technical scuba divers.
Small Fit Masks
Small fit scuba diving masks are adult masks for smaller faces. Learn about scuba diving mask styles and features.
Small fit scuba diving masks are adult masks for smaller faces. Learn about scuba diving mask styles and features.
Masks With Purge Valves
Purge valves can make it easy to clear water from a scuba diving mask. Learn about scuba diving mask styles and features.
Purge valves can make it easy to clear water from a scuba diving mask. Learn about scuba diving mask styles and features.
Snorkels Without Purge Valves
Learn about snorkels without purge valves. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Learn about snorkels without purge valves. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
DecompressionVSNarcosis
In scuba diving, nitrogen narcosis and decompression sickness are both caused by nitrogen gas. However, the two conditions have very different symptoms and treatments. Learn the difference between nitrogen narcosis and decompression sickness in scuba diving.
In scuba diving, nitrogen narcosis and decompression sickness are both caused by nitrogen gas. However, the two conditions have very different symptoms and treatments. Learn the difference between nitrogen narcosis and decompression sickness in scuba diving.
Cenote Dive the Pit
The Pit offers some of Mexico’s best cenote scuba diving. Certified divers see fossils, light effects, and cave formations on a guided cenote cavern dive at the Pit. Cenotes are freshwater sink holes in the Maya Riviera/ Yucatan Peninsula in Mexico. Cenote scuba diving can be experienced by certified scuba divers on a guided cenote cavern dive.
The Pit offers some of Mexico’s best cenote scuba diving. Certified divers see fossils, light effects, and cave formations on a guided cenote cavern dive at the Pit. Cenotes are freshwater sink holes in the Maya Riviera/ Yucatan Peninsula in Mexico. Cenote scuba diving can be experienced by certified scuba divers on a guided cenote cavern dive.
Mouthpieces
Learn about snorkel mouthpieces. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Learn about snorkel mouthpieces. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Voracious Appetites
An adorable black seahorse wraps itself around a bright red sponge in this scuba diving photo. See pictures and read facts about seahorses and pipefish in this scuba diving photo gallery.
An adorable black seahorse wraps itself around a bright red sponge in this scuba diving photo. See pictures and read facts about seahorses and pipefish in this scuba diving photo gallery.
What is Wreck Diving?
Learn about the basics of wreck diving, the types of wrecks you can dive, the dangers involved, and training.
Learn about the basics of wreck diving, the types of wrecks you can dive, the dangers involved, and training.
Parts of a Snorkel
Lear about the basic parts of a snorkel. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.
Lear about the basic parts of a snorkel. See photos of snorkels and learn about snorkel features and styles. Snorkels are an important pieces of scuba diving gear. Here are photos and information to help find a snorkel that is appropriate for your needs.