Scuba diving is swimming underwater using a scuba set. Scuba actually stands for Self-Contained Underwater Breathing Apparatus. Thus, very important to the scuba diver is the source of breathing gas to be able to able to stay underwater longer. There are many types of diving: commercial, military, recreational, rescue, scientific, and so on. There are many diving organizations that train and certify divers and dive instructors for recreational scuba diving.

A scuba diver needs basic equipment and gear before diving like: ~ Wetsuit, booties, and swim fins ~ Mask and snorkel ~ Buoyancy Compensation Device or BCD ~ Dive light ~ Scuba tank and regulator.