 | Tetsurō Tamba als Captain Munekata |
 | Hiroshi Fujioka als Geologist Jiro Tate |
 | Yutaka Mizutani als Seajacker Munk |
 | Ryôhei Uchida als Boatswain Nishizawa |
 | Fumio Watanabe als Reporter Tatsuya Iwado |
 | Dai Kanai als Doctor Hatsuyama |
| K. Amoha als Seajacker Simba |
| Willie Dorsey als Seajacker Zamba |
 | Ken Sanders als Seajacker Kifal |
| Tappei Shimokawa als Chief Steward Terada |
 | Mizuho Suzuki als Commander of Defense Katsuragi |
 | Kei Satō als T.V. Director Fukami |
 | Jō Shishido als Chief Engineer Kosai |
 | Peter Graves als Elliott Rhoades |
 | Gigi Perreau als Patricia Haber |
 | Marvin Miller als Seajacker Simba (voice) |
| Tomoyuki Tanaka | Executive Producer |
| Katsumune Ishida | Director |
| Koji Tanaka | Original Story |
| Yasuko Ōno | Screenplay |
| Toshio Masuda | Screenplay |
| Rokurô Nishigaki | Director of Photography |
| Hajime Kaburagi | Original Music Composer |
| Nobuo Ogawa | Editor |
| Teruyoshi Nakano | Special Effects |
| William C. Thomas | Producer |
| John A. Bushelman | Director |
| Yoshirō Muraki | Art Direction |
| Shin Watarai | Sound Recordist |
| Toshio Takashima | Lighting Technician |
| Takashi Nakao | Still Photographer |
| Ippei Imamura | Assistant Director |
| Hisayuki Murakami | Unit Production Manager |
| Normand Houle | Art Direction |
| Jeff Bushelman | Editor |
| Osamu Tanaka | Associate Producer |
| Riley Jackson | ADR Supervisor |