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The Diving Equipment and Marketing Association (DEMA, formerly the Diving Equipment Manufacturers Association), [37] [38] is an international organization for the promotion and growth of the recreational scuba diving and snorkeling industry.
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 ...
The word SCUBA was coined in 1952 by Major Christian Lambertsen who served in the U.S. Army Medical Corps from 1944 to 1946 as a physician. [1] Lambertsen first called the closed-circuit rebreather apparatus he had invented "Laru", an (acronym for Lambertsen Amphibious Respiratory Unit) but, in 1952, rejected the term "Laru" for "SCUBA" ("Self-Contained Underwater Breathing Apparatus"). [2]
With this high-tech snorkel, you can dive down without holding a piece of plastic in your mouth. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ...
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DACOR Corporation was a former American manufacturer of scuba diving equipment which was founded in 1954 by Sam Davison Jr. in Evanston, Illinois as "The Davison Corporation". Since its foundation. DACOR was one of the five early American diving equipment manufacturers. Together, they were: DACOR; U.S. Divers (Now Aqua-Lung)
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