Snuba
Limited depth airline breathing apparatus towed by the diver / From Wikipedia, the free encyclopedia
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Snuba is form of surface-supplied diving that uses an underwater breathing system developed by Snuba International.[1] The origin of the word "Snuba" may be a portmanteau of "snorkel" and "scuba", as it bridges the gap between the two.[2] Alternatively, some have identified the term as an acronym for "Surface Nexus Underwater Breathing Apparatus",[3] though this may have been ascribed retroactively to fit the portmanteau. The swimmer uses swimfins, a diving mask, weights, and diving regulator as in scuba diving.[4] Instead of coming from tanks strapped to the diver's back, air is supplied from long hoses connected to compressed air cylinders contained in a specially designed flotation device at the surface.[5] Snuba often serves as a form of introductory diving, in the presence of a professionally trained guide, but requires no scuba certification.[6][7]