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Scuba diving is a form of underwater diving where the diver uses a self-contained underwater breathing apparatus (scuba) which is completely independent of surface supply, to breathe underwater.[1] Scuba divers carry their own source of breathing gas, usually compressed air,[2] allowing them greater independence and freedom of movement than ...
NAUI's definition of technical diving states: Technical diving is a form of scuba diving that exceeds the typical recreational limits imposed on depth and immersion time (bottom time). Tec diving involves accelerated decompression and/or the use of variable gas mixtures during a dive..