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A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face 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]
A diving mask (also half mask, dive mask or scuba mask) is an item of diving equipment that allows underwater divers, including scuba divers, free-divers, and snorkelers, to see clearly underwater. [1] [2] Surface supplied divers usually use a full face mask or diving helmet, but in some systems the half mask may be used. [2]
Mask knocked off and lost; Inspection of the mask and strap before use. [19] Hold mask in place with hand. Practice diving with no mask. [19] Spare mask in emergency spares for team. [19] Use of full face mask that is more securely attached to the head and tethered by the hose. [6] Buoyancy compensator blow-up. (uncontrolled inflation)
Don't think everyone would be so calm...
Scuba diving can be done with cable voice communications, but the restriction on mobility makes this an unusual choice as it negates the primary reason for using scuba. Through-water voice communications do not have the same restriction on diver mobility, which is often the reason for choosing scuba for professional diving, but are more complex ...
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[49] [50] Scuba divers can surface away from the boat and be unable to swim back against the current or wind. [51] Live-boating: Diving operations from a manually controlled vessel under way, which may use the propulsion system to maneuver during the dive, with associated hazards to the diver. The risk is greater with surface-supplied equipment ...
Shark cage diving is scuba diving or snorkeling where the observer remains inside a protective cage designed to prevent sharks from making contact with the divers. Shark cage diving is used for scientific observation, underwater cinematography, and as a tourist activity.