1) Sport in Cozumel 2) Underwater diving procedure 3) Water activity 
Scuba diving is a form of underwater diving in which a diver uses a self contained underwater breathing apparatus (scuba) to breathe underwater. 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 free...
swimming done underwater with a self-contained underwater-breathing apparatus. See underwater diving.[5 related articles]
[n] - skin diving with scuba apparatus
noun skin diving with scuba apparatus