scuba diving in Kauai - Hawaii

Scuba diving is swimming underwater, or taking part in another activity, while using a scuba set.By carrying a source of breathing gas (usually compressed air),the scuba diver is able to stay underwater longer than with the simple breath-holding techniques used in snorkeling and free-diving,and is not hindered by air lines to a remote air source. The scuba diver typically swims underwater by using fins attached to the feet.However, some divers also move around with the assistance of a DPV (diver propulsion vehicle), commonly called a "scooter",or by using surface-tethered devices called sleds pulled by a boat.(from:wikipedia)