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A snorkel is used to allow the user to breathe atmospheric air when their face is immersed in water while swimming or floating at the surface. [1] To work effectively, the snorkel must allow the user to inhale and exhale comfortably over an extended period, and provide a sufficient volume of air with appropriate oxygen and carbon dioxide content to maintain a sufficient and comfortable ...
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Underwater breathing apparatus can be classified as open circuit, semi-closed circuit, (including gas extenders) or closed circuit (including reclaim systems), based on whether any of the exhaled gas is recycled, and as self-contained or remotely supplied (usually surface-supplied, but also possibly from a lock-out submersible or an underwater habitat), depending on where the source of the ...
Cressi Sub headquarter in Genoa. Cressi's offices and production facilities remain in Genoa, Italy where the company was founded in 1946. This location on the northern shore of the Mediterranean is significant to the company's historical success and current activities.
New products include: a triple cylinder set; a dial pressure gauge and a depth gauge; Jetfins and Super Tarzan lined wetsuits from France, dark-green Skooba-“totes” dry suits, the "world’s finest", from the USA; the Aquamobile submarine built for two or three divers wearing breathing apparatus and the 300-watt underwater lantern.
The snorkel may be an independent item or integrated with the mask. The use of this equipment allows the snorkeler to observe the underwater environment for extended periods with relatively little effort, and to breathe while face-down at the surface. Snorkeling is a popular recreational activity, particularly at tropical resort locations.