Frogman is a term used to describe a DIVER who is specially trained in underwater combat and demolition. This type of DIVER is also known as a combat swimmer or a clearance DIVER. Frogmen are typically employed by the military, police, or other government agencies to perform underwater operations such as reconnaissance, sabotage, and search and rescue. The term 'Frogman' is derived from the amphibious creature, the frog, which is well-suited for swimming and jumping.