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    Scuba diving - Wikipedia
    Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, 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 own source of breathing gas, affording them greater independence and movement than surface-supplied divers, and more time underwater than freedivers. Although the use of compressed air is common, other gas blends are also used.
    History

    Although underwater diving in the mode of freediving has been practiced for thousands of years, the history of scuba diving, closely linked with the history of scuba equipment, began in the 19th century and by the early twentieth c… See more

    Equipment

    Scuba diving equipment, also known as scuba gear, is the equipment used by a scuba diver for the purpose of diving, and includes the breathing apparatus, diving suit, buoyancy control and weighting systems, fins for mob… See more

    Breathing from scuba

    Breathing from scuba is mostly a straightforward matter. Under most circumstances, it differs very little from normal surface breathing. In the case of a full-face mask, the diver may usually breathe thr… See more

    Procedures

    The underwater environment is unfamiliar and hazardous, and to ensure diver safety, simple, yet necessary procedures must be followed. A certain minimum level of attention to detail and acceptance of responsibili… See more

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