Dive (and diving) is a word that can have several meanings:In the context of aquatics:
Underwater diving refers to the practice of swimming underwater
Scuba diving refers to the practice of swimming underwater with breathing apparatus.
Diving refers to the sport of jumping head first into a body of water or pool, with an emphasis on acrobatics and/or height of the dive.
Diving can refer to the act of a submarine or other submersible vehicle going below the surface of the water.
Diving can refer to the act of marine mammals and other animals which are normally not aquatic, but go underwater from time to time.
In the context of music:
Dive is an industrial music band from Belgium.
Dive is an electronic music band from Sweden, and also a 1994 album by the band.
Dive is the name of a 1993 album by Sarah Brightman.
"Dive" is the name of a song by Nirvana.
"DIVE" can also refer to the name of J-pop band BeForU's first single, which first appeared in Dance Dance Revolution 5thMIX.