If you wave to someone from the surface, it is a sign of distress, NOT a way to say hello.

If you wave to someone from the surface, it is a sign of distress, NOT a way to say hello.

• A. It depends
• B. True
• C. Not sure
• D. False

Answer: (B)

Waving from the surface to someone underwater is treated as an attention-getter and is commonly understood as a potential distress signal rather than a casual greeting. From above, a quick wave is the fastest way to indicate that something may be wrong or that help is needed, and divers are trained to interpret such gestures with caution. To avoid confusion and safety risks, surface signals should use clear, reliable methods (like a whistle or loud signal) when a response is needed, and greetings should be arranged through prior agreement or explicit signals so both people understand the intention.

Waving from the surface to someone underwater is treated as an attention-getter and is commonly understood as a potential distress signal rather than a casual greeting. From above, a quick wave is the fastest way to indicate that something may be wrong or that help is needed, and divers are trained to interpret such gestures with caution. To avoid confusion and safety risks, surface signals should use clear, reliable methods (like a whistle or loud signal) when a response is needed, and greetings should be arranged through prior agreement or explicit signals so both people understand the intention.