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 |
| Production | Kenji Yoshida | Executive Producer |
| Writing | Mamoru Sasaki | Screenplay |
| Sound | Hiromasa Suzuki | Original Music Composer |
| Visual Effects | Sadao Miyamoto | Animation Supervisor |
| Writing | Ippei Kuri | Storyboard |
| Visual Effects | Akemi Takada | Character Designer |
| Visual Effects | Kunio Okawara | Mechanical Designer |
| Visual Effects | Takashi Saijo | Animation Director |
