What is the purpose of communication signals in diving?

Communication signals in diving primarily serve to ensure understanding of the dive plan among divers. In a diving environment, divers often find themselves underwater, where verbal communication is not possible. Therefore, using established hand signals or gestures becomes essential to convey important information effectively.

By utilizing these signals, divers can confirm aspects of the dive plan, such as descent and ascent procedures, location, and safety protocols. This clarity is crucial for diver safety to prevent confusion and ensure that everyone on the dive team is on the same page, thereby reducing the risk of accidents or incidents.

While sharing findings about marine life, attracting attention from fish, or indicating discomfort are all valid purposes for communication, they are secondary to the fundamental need for clear and effective communication regarding safety and planning during the dive.