Fish (noun): a term occasionally used during a channel crossing or a marathon swim in an ocean by an experienced support crew for the type of fish with a cartilaginous skeleton and a highly streamlined body with a tough usually dull gray skin, commonly known as a shark. Sharks are typically active predators that fascinating and frightening, found in all seas, ranging in size from 17 cm to 12 meters. Synonyms include shark, The Man in the Gray Suit, Mack, Old Toothy, Garbage Can of the Sea. [Some scholars believe shark is derived from the German word schurke, meaning villain.]

Excerpt from the Open Water Swimming Dictionary (American English version).

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