Arthur Franz
Richard "Reef" Holloway
Acting
Dick Foran
Dan Wendover
Acting
Brett Halsey
Carl Neilson Jr.
Acting
Tom Conway
Ian Hunt
Acting
Paul Dubov
David Milburn
Acting
Bob Steele
"Grif" Griffin
Acting
Victor Varconi
Clifford Kent
Acting
Joi Lansing
Julie
Acting
Selmer Jackson
Admiral Terhune
Acting
Jack Mulhall
Justin Murdock
Acting
Jean Moorhead
Helen Milburn
Acting
Richard Tyler
Frogman Carney
Acting
Kenneth Becker
Frogman Powell
Acting
Sid Melton
Chester Tuttle
Acting
Frank Watkins
Watkins
Acting
Pat Michaels
Narrator
Acting
John Hilliard
Saucer Voice (voice)
Acting
Edmund Cobb
Passerby (uncredited)
Acting
Frank Lackteen
Passerby (uncredited)
Acting