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