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.
Sonny Chiba | Ken Abe |
Peggy Neal | Jenny Gleason |
Franz Gruber | Commander Brown |
Steve Queens | Captain Bob |
Andrew Hughes | |
Erik Neilson | Dr. Moore |
Mike Daneen | Dr. Josef Heim |
Beverly Keller | |
Gunther Braun | Submarine captain |
Koji Miemachi | |
Tadashi Suganuma | Nishida |
Hideo Murota | Henchman |