Scuba was invented for recreational and practical purposes. Some use SCUBA to experience underwater life in person, whereas others use SCUBA to perform underwater tasks, such as welding.
The vest is simply called a scuba vest. It's to hold your air tank and regulators :)
Scuba masks do not contain oxygen. Instead, scuba divers rely on a separate piece of equipment called a tank or cylinder to supply compressed air or a breathing gas mixture for underwater breathing. The scuba mask's purpose is to provide a clear field of vision and to create an airspace for the diver's eyes and nose while underwater.
Equipment changes depending on the location of the dive and purpose. Basic equipment include, wetsuit, fins, snorkel and mask, lead weight, scuba tank, BCD (Buoyancy Compensation Device), and Regulator.
Either, depending on context. Usually, if used as a noun it is SCUBA; as an adjective, as in scuba diver, it is just scuba.
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Scuba diving.
A scuba diver is a human who enjoys scuba diving. Therefore, a scuba diver has a spine and is a vertebrate.
No, but "scuba-diving" is a verb.
'SCUBA' is a noun, referring to the breathing apparatus. 'SCUBA dive' is the verb, with 'SCUBA dived' as the past-tense form.
The purpose of a depth gauge is to measure the depth of water. It is used by scuba divers to make sure they don't go too deep because the deeper they go the more pressure the water is.
It's an acronym: Self-Contained Underwater Breathing Apparatus = SCUBA (not scuba)
Scuba was invented by the navy.