What is another name for a scuba diver?

back in the (good old) days the were refered to as FROGMEN in the armed forces.

from the merriam Webster online dictionaryMain Entryfrog·manPronunciation\ˈfrȯg-ˌman, ˈfräg-, -mən\FunctionnounDate1945

: a person equipped (as with face mask, flippers, and air supply) for extended periods of underwater swimming ; especially : a person so equipped for military reconnaissance and demolition