Dive, Dive, Dive! Scuba Diving Is Fun For Everyone By: Stephen Dolan | - Everybody knows what scuba diving is; it is the diver with the air tank on his back and a mouthpiece. The basic scuba set-up is a tank of compressed oxygen on the diver's back, with a line to a mouth piece. The oxygen is delivered through a mouth piece, allowing the diver to breath.
Your carbon dioxide is then either released into the water, or, in self-contained systems or rebreathers, back into the tank.