A diving mask

Snorkeler wearing a soft silicone 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. diving mask I photographed this This image has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. ... diving mask I photographed this This image has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. ... diving with children File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... diving with children File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... A snorkeler amid corals on a coral reef near Fiji. ... The fundamental item of diving equipment used by divers is the SCUBA equipment, such as the Aqualung or Rebreather. ... Scuba divers. ... Freedive photographer Free-diving is an aquatic sport, considered an extreme sport, in which divers attempt to reach great depths unassisted by breathing apparatus. ... A snorkeler amid corals on a coral reef near Fiji. ... Human nose in profile You may be looking for Nose, a town in Japan, or The Nose, a story by Nikolai Gogol and an opera by Dmitri Shostakovich. ... Pressure (symbol: p) is the force per unit area acting on a surface in a direction perpendicular to that surface. ... Water (from the Old English waeter; c. ... The material definition of glass is a uniform amorphous solid material, usually produced when a suitably viscous molten material cools very rapidly to below its glass transition temperature, thereby not giving enough time for a regular crystal lattice to form. ... This article or section does not cite its references or sources. ... Rubber is an elastic hydrocarbon polymer which occurs as a milky emulsion (known as latex) in the sap of several varieties of plants though can be produced synthetically. ... Silicones, or polysiloxanes, are inorganic polymers consisting of a silicon-oxygen backbone (...-Si-O-Si-O-Si-O-...) with side groups attached to the silicon atoms. ...

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. Snorkel A snorkel (also spelled schnorkel or schnorchel) is a tube that allows a person, vehicle, or vessel to draw air while submerged under water. ... Categories: Stub | Footwear | Diving ...

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.

A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask A full-face diving mask is a type of diving mask worn by SCUBA divers so that they can talk with the surface or other divers. ... Broadly conceived, linguistics is the study of human language, and a linguist is someone who engages in this study. ... Diving helmets are worn by divers who need to speak and hear underwater. ... Surface supplied diver at the Monterey Bay Aquarium, Monterey, California Surface supplied diving refers to divers using equipment supplied with breathing gas using an umbilical cord from the surface, often from a diving support vessel but possibly, indirectly via a diving bell. ... Hardhat diver entering water at Stoney Cove, England A standard diving dress consists of a metallic (copper, brass or bronze) diving helmet, an airline or hose from a surface supplied diving air pump, a canvas diving suit and boots. ...

External links

• Brief history of diving - From antiquity to the present.
• HydroOptix - Double-Dome dive masks.