OK (signal)
Thumb and forefinger form a circle, other fingers extended — confirms 'I am OK' and, as a question, asks 'are you OK?'. The diver must answer; no response is treated as a problem.
Thumb and forefinger form a circle, other fingers extended — confirms 'I am OK' and, as a question, asks 'are you OK?'. The diver must answer; no response is treated as a problem.