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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]
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]
Practicing mask clearing during entry level training. Water commonly leaks into the mask. This can interfere with clear vision, requiring the diver to flush it out. Reasons for leakage include poor fit, stray hair breaking the seal, facial muscle movement that causes temporary leaks, or the impact of external objects against the mask. [12]
Snorkeling or scuba diving should be all about taking in beautiful aquatic views, and not about water accidentally shooting into your nose, mouth, or eyes. Diving masks shield your face as you ...
To avoid barotrauma, the diver equalises the pressure in all air spaces with the surrounding water pressure when changing depth. The middle ear and sinus are equalised using one or more of several techniques, which is referred to as clearing the ears. [5] The scuba mask (half-mask) is equalised during descent by periodically exhaling through ...
The pool dives - which can also take place in calm, current free, shallow open water, provide the training in the basic and emergency skills, including getting into the water, breathing under water using the regulator, use of fins, basic buoyancy control, mask clearing and regulator recovery. [6]
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