On a future Earth ruled by Emperor Darius, the crew members of the Nautilus Submarine fight bravely to win freedom from oppression.
Unfortunately the movie Undersea Encounter is not yet available on HBO Max.
| Directing | Ippei Kuri | Director |
| Writing | Mamoru Sasaki | Screenplay |
| Production | Kenji Yoshida | Executive Producer |
| Visual Effects | Sadao Miyamoto | Animation Supervisor |
| Visual Effects | Akemi Takada | Character Designer |
| Sound | Hiromasa Suzuki | Original Music Composer |
| Visual Effects | Takashi Saijo | Animation Director |
| Writing | Ippei Kuri | Storyboard |
| Visual Effects | Kunio Okawara | Mechanical Designer |
