Full-face diving mask

Full face diving mask

The AGA Divator full face mask is used by military and civilian divers
Other names	Band-mask
Uses	Provision of breathing gas, underwater vision, and sometimes communications for underwater divers
Inventor	Yves le Prieur
Related items	Diving helmet, Diving regulator, Diver communications, Diving mask

A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas.^[1] The full face mask has several functions: it lets the diver see clearly underwater, it provides the diver's face with some protection from cold and polluted water and from stings, such as from jellyfish or coral. It increases breathing security and provides a space for equipment that lets the diver communicate with the surface support team.^[2]

Full-face masks can be more secure than breathing from an independent mouthpiece; if the diver becomes unconscious or suffers an oxygen toxicity convulsion, the diver can continue to breathe from the mask, unlike a scuba mouthpiece which is normally gripped between the teeth.^[1][2]

Full-face diving masks are often used in professional diving. They are relatively rarely used in recreational diving.^[2]