Diving mask
Encyclopedia : D : DI : DIV : Diving mask
A diving mask is an item of diving equipment that allows scuba divers, free-divers, and snorkelers to see clearly underwater. It is constructed so that the diver can exhale through the nose into the mask to prevent the "squeeze" caused by increasing pressure during descent in water. Diving masks have a durable glass plate in front of the eyes and a "skirt" of rubber or silicone to create a watertight seal with the diver's face. A strap keeps the mask in position.
Sometimes masks are sold in conjunction with snorkels and/or swimfins. Low quality snorkeling masks may have a plastic or low-quality glass faceplate, and are not recommended for anything but rare, casual use.
Related equipment
There are several specialised types of diving headgear:- full face diving mask - often worn by working divers who need underwater verbal communication ability.
- diving helmet - often worn by divers using surface supplied diving equipment.
- hard hat - part of the old fashioned standard diving dress.
External links
- [Brief history of diving] - From antiquity to the present.
- [HydroOptix] - Double-Dome dive masks.
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