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What is Scuba Diving?
Unlike other modes of diving, which rely either on breath-hold or on air pumped from the surface, scuba divers carry their own source of breathing gas, usually compressed air, allowing them greater freedom of movement than with an air line or diver's umbilical and longer underwater endurance than breath-hold.
The equipment used by a scuba diver is the self-contained underwater breathing apparatus which allows the diver to breathe while diving, and is transported by the diver. Also needed are flippers/fins, a diving mask and a wetsuit.
- The term "SCUBA" (an acronym for "self-contained underwater breathing apparatus") originally referred to United States combat frogmen's oxygen rebreathers, developed during World War II by Christian J. Lambertsen for underwater warfare.