|Scuba Diving and Skin Diving
Air Embolism Illness caused when a diver holds his or her breath during an ascent to the surface.
Anoxia Insufficient supply of oxygen.
Aqualung Trade name now synonymous with scuba.
Atmospheric pressure Air pressure at sea level.
Ballast Weights used to allow the diver to sink or maintain a specific depth.
Bends (Caisson Disease) Excess nitrogen in the body, that expands as the body ascends.
Buddy Line Safety technique in scuba diving in which two divers are linked by a safety line.
Buoyancy The upward force exerted by water or other fluids on a submerged or floating body.
Compressor Machine that is used to fill air tanks for scuba diving.
Cousteau Jacques Cousteau, famous explorer, co-inventor (with Emile
Gagnan) of the Aqualung, in 1942.
Cylinder Same as tank.
Decompression To lessen the pressure underwater; to ascend to the surface.
Dry Suit Waterproof rubber suit worn by scuba divers.
Embolism Presence of air bubbles in the diver’s circulation system.
Face Mask Mask used by scuba divers and skin divers that allows a clear view under water.
Fathom Approximately 6 feet.
Fins Rubber froglike “feet” that aid in scuba diving and skin diving.
Flotation Gear Life vests and other bouyant material that allow the diver or swimmer to float.
Frogmen Scuba divers trained for underwater demolition, exploration, and so on.
Hyperoxia Excess oxygen in body tissues.
Hyperventilation Breathing rate higher than normal.
Mae West Life jacket for use on the surface of the water.
Narcosis (Nitrogen narcosis) Illness that results when the diver dives too deep and nitrogen in the diver’s air supply has a narcotic effect. Divers have been known to spit out their scuba mouthpiece and drown.
One Atmosphere Air pressure at sea level; 14.7 pounds per square inch.
Recompression Treatment for decompression illness by the use of a compres- sion chamber that reduces compression levels at a safe rate.
Regulator Mechanical device that governs the flow of air from the scuba tanks to the scuba diver.
Scuba Stands for Self-Contained Underwater Breathing Apparatus.
Skin Diving Diving, generally on the surface of the water without scuba tanks, and usually with a snorkel.
Snorkel J-shaped breathing tube that allows the skin diver to view under water
(face down) while breathing surface air, without inhaling water.
Spear Guns Pressure power guns used underwater to stun or kill marine life.
Tanks Metal containers used to contain the scuba diver’s air supply.
Tidal Volume The volume of air that enters and leaves the lungs during normal breathing.