While covering a test of guided torpedoes, two reporters believe they see what appears to be a strange-looking swimming creature. They investigate the matter further and discover that there is a race of fish-men living under the sea. The fish-men capture the pair and keep them prisoner in their underwater city.
Cast
Sonny Chiba
Ken Abe
Peggy Neal
Jenny Gleason
Franz Gruber
Commander Brown
Andrew Hughes
Unknown
Erik Neilson
Dr. Moore
Mike Daneen
Dr. Josef Heim
Beverly Keller
Unknown
Gunther Braun
Submarine captain
Koji Miemachi
Unknown
Tadashi Suganuma
Nishida
Hideo Murota
Henchman
Osamu Yamanouchi
Unknown
Kosaku Okano
Nakamura
Ichiro Mizuki
Unknown
Akemi Fuji
Female researcher
Enver Altenbay
Unknown
Hans Horneff
Bill
Steve Queens
Captain Bob
Crew
Hajime Sato
Director
Kôichi Ôtsu
Screenplay
Fumio Soda
Editor
Kazuo Shimomura
Director of Photography
Goro Hanawa
Assistant Director
Masafumi Soga
Executive Producer
Ivan Reiner
Producer
Walter Manley
Producer
Seiichi Yoshino
Producer
Hirokazu Iwata
Sound Recordist
Toshiaki Morisawa
Lighting Technician
Nobuo Yajima
Special Effects
Shunsuke Kikuchi
Original Music Composer
Masami Fukushima
Original Story
Shinichi Eno
Art Direction
