Intro to SCUBA

What is SCUBA? I mean what does the word S.C.U.B.A. mean? It means Self Contained Underwater Breathing Apparatus. From this a person can realize that the diver is going to be underwater and contained by himself/herself and not reliant on another for their air source. SCUBA is definitely among some of the most awesome adventures left on this planet, for you know that you are now venturing into the last frontier no fully explored on this planet.