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Scuba diving is a form of underwater diving where the diver uses a self-contained underwater breathing apparatus (scuba) which is completely independent of surface supply, to breathe underwater.[1] Scuba divers carry their own source of breathing gas, usually compressed air,[2] allowing them greater independence and freedom of movement than ...
Pressure is everything in scuba diving and as you may know, the deeper you descend, the more the pressure increases. If you think of your lungs for instance, when you take a deep breath above water and then descend five meters, the pressure on your lungs increases and so the volume of your lungs decreases.