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From Mexico






Cavern diving requires more communication than open water. By using your light and hand signals, it is easy to clearly understand each other. These signals and techniques will be demonstrated during your pre-dive briefing. When using hand signals, point your light directly at your hand - not at the person you are communicating with.

Attention - To get someone's attention, point your light at a spot in front of them, and move it slowly side to side, or up and down. When they look at you, follow it with the appropriate signal you need to communicate.

Emergency - Point your light in front of the person, moving it rapidly and erratically. Remember that in an out-of-air situation, the guide will be giving you their primary regulator from their mouth.

OK - There are two OK signs - move your light in a controlled circle, or point your light at the standard OK hand signal.  The OK signal must be responded to."OK"

 Stop - If your guide uses the stop signal, a closed fist held upright, hold your position until you receive an OK signal to proceed.


Air Consumption - When you reach two thirds of your air supply, get your guide´s attention (with the attention sign) and point your light at your hand with two fingers held upright.  One third - one finger.

Problem - Signal Attention, then the standard problem signal followed by an indication of what the problem is - equalization, cold, etc."Problem"

Turn the Dive - One finger, pointed up, moving in a circle.

Sediment - Two fingers rubbing together. This means you are stirring up the bottom and affecting the visibility.

CALL THE DIVE - the most important signal. Any diver can call the dive at any time, for any reason. The guide will take you to the nearest exit."Call the Dive"