What is the primary reason for using hand signals while diving?

Using hand signals while diving serves as a crucial method for clear communication underwater, where verbal communication is not possible due to the nature of the environment. The primary reason for adopting hand signals is that they allow divers to convey important information, such as the need to ascend, the presence of a problem, or observations like marine life or navigation cues, without relying on sound or voice which can easily be distorted or lost in the water.

In the context of diving, clear and effective communication is vital for safety and coordination between dive buddies. By employing universally recognized hand signals, divers can ensure that messages are understood promptly, thus facilitating safety and enhancing the underwater experience. Hand signals thus become an essential language of diving, enabling divers to interact closely and respond effectively to situations they encounter while submerged.