Diving Girl

• Equalization – the adjustment the Eustachian tube in the ear needs to do when submerged in the higher pressured environment underwater.
• Underwater breathing – the skill of breathing through the apparatus. All divers must get used to this way of breathing.
• Mask clearing – This is done to make sure that there will not be anything that will obstruct the diver's view as well as to remove any water that might come into the mask.
• Air sharing – the act of multiple divers sharing one air supply.