James Arness
Kirk Hamilton
Kasey Rogers
Elaine Jeffries
Gloria Petroff
Janice Jeffries
Bill Kennedy
Martin Shannon
Pierre Watkin
Magistrate Jeffries
Tom Hubbard
John Hartley
Jane Harlan
Nancy Holden
Tom Monroe
Merchant Capt. Tallman
Rye Billsbury
Pirate Captain Hackett
Fred Kohler Jr.
Nat Mercer
Tim Graham
Salty
Richard Bartell
Mr. Davis
Robert Carson
Naval Capt. Allison
Don Riss
Narrator
James Guilfoyle
Dr. Wakeland
Guy Bellis
[Credited, but edited]
Herman Cantor
Fuller - Sailor
Norman Dawn
Two Lost Worlds
Released
Bande-annonce
