Scuba diving

Scuba diving

Underwater diving in which the diver uses scuba gears to breathe underwater.

Industry: Sports

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Scuba diving

Wheel

Sports; Scuba diving

A dive table used to plan muti-level dives.

Alpha flag

Sports; Scuba diving

An International maritime signal flag, meaning, 'Diver down, keep clear'.

Mask squeeze

Sports; Scuba diving

Occurs in rapid descents where the diver neglects to equalise his/her mask. The increase pressure causes tissues around the eyes to swell.

Descent/ascent line

Sports; Scuba diving

A line suspended from a boat, float or buoy used to permit divers to control their descents and ascents and to provide guidance to the bottom in poor visibility or strong currents; particularly ...

Safety stop

Sports; Scuba diving

On ascent from a dive, a specified time spent at a specified depth, for purposes of nitrogen off gassing. By definition it is not a mandatory for a safe ascent from a dive.

Ebb current

Sports; Scuba diving

A movement of tidal current away from shore or down a tidal stream; tide that is flowing out or causing a lower water level.

Mask

Sports; Scuba diving

A skirted glass window constructed to provide air space between eyes and water and to permit both eyes to see in the same plane; a regular mask covers eyes and nose only; modern mask skirts are ...