The Sharkfighters

Victor Mature

Lt. Cmdr. Ben Staves

Karen Steele

Martha Staves

James Olson

Ens. Harold Duncan

Philip Coolidge

Lt. Cmdr. Leonard Evans

Claude Akins

Chief 'Gordy' Gordon

Rafael Campos

Carlos

George N. Neise

Cmdr. George Zimmer (as George Neise)

Nathan Yates

Capt. Ruiz

Jesús Hernández

Vincente

Lorin Johns

Self (as M/Sgt. Lorin Johns)

David Westlein

Self (as CPO David Westlein)

Charles Collingwood

Narrator