
Milquetoast Henry Limpet experiences his fondest wish and is transformed into a fish. As a talking fish he assists the US Navy in hunting German submarines during World War II.
Larry Keating
Admiral P.P. Spewter

Oscar Beregi Jr.
Nazi Admiral (as Oscar Beregi)

Charles Meredith
Fleet Admiral

Elizabeth MacRae
Ladyfish (voice)

Paul Frees
Crusty (voice)
Wesley Gale
Man Staring Into Window (uncredited)