Doug McClure
— Doc Willoughby
Marian Collier
— Terry Abelard
James Whitmore
— Capt. Mike Riley
David Hartman
— Boats McCafferty
Nancy Kwan
— Nurse Tomiko Momyama
Gary Vinson
— Walt Purdy
James Shigeta
— Diver Toshi O'Hara
Steve Carlson
— Johnny Crane
George Furth
— Hamner
Keye Luke
— Gondai-San
Jill Donohue
— Marci Adler
Bea Bradley
— Lt. Large
Jim Creech
— Mr. Bayless
Jerry Fujikawa
— Watanabe
Betty Kerwin
— Christine
Edward Faulkner
— John Abelard
James Hong
— Narrator
Margaret Willis
— Elderly Woman