Scuba diving
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Scuba diving is an underwater diving mode where divers use breathing equipment completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. The word sc
Recreational scuba diver
The undersea kelp forest of Anacapa Island off of the coast of Oxnard, California
Diver looking at a shipwreck in the Caribbean Sea
Sidemount diver pushing a cylinder in front
Christian J. Lambertsen
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Christian James Lambertsen was an American medical researcher. He was a environmental medicine and diving medicine specialist who was principally responsible for developing the United States Navy frog
Scuba diving
…and therefore has a limited but variable endurance. The word scuba is an acronym for "self-contained underwater breathing apparatus" and was coined by Christian J. Lambertsen in a patent submitted in 1952. Scuba divers carry their source of breathing gas, affording them greater independence and movement than surface-supplied…
Dr. Lambertsen, U.S. Army in 1942