Underwater communicators allow divers to communicate with each other while underwater. They can be voice or visual devices, including wired or wireless systems. Voice communicators use microphones and speakers to transmit and receive speech, while visual systems use light signals or text displays. These devices are useful for coordinating with dive teams and enhancing safety during complex dives. Proper use and understanding of the communicator’s features are essential for effective communication and ensuring that the system functions correctly throughout the dive.