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20 Common Hand Signals for Scuba Diving


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The descend hand signal for scuba diving

The "Thumbs-Down" Signal in scuba diving communicates "descend".

Natalie L Gibb

The "Down" Hand Signal
The "Thumbs-Down" hand signal communicates "go down" or "descend" underwater. This signal should not be confused with the "not-okay" hand signal used to indicate a problem. The "Down" signal is used in the first step of the Five Point Descent, in which divers agree that they are prepared to begin the descent.

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