Sci-Fi Deep Sea Submarine Poster

A cinematic sci-fi anime movie poster of a heavily armored cylindrical deep-sea submarine on a rocky ocean floor. The sub features a glowing cyan central viewport, a ring of smaller lights, two bright downward spotlights, and "hull_text" painted on its side. Behind it looms a creature_type with radiating tentacles tipped with cyan lights. The dark teal abyss features glowing seabed flora. Top left text includes the Japanese title "main_title", the subtitle "english_subtitle", and the tagline "tagline". Small technical footer text reads "INTERNATIONAL DEEP SEA TREATY ORGANIZATION" on the bottom left and "IDTO-AB-013300-ALPHA" on the bottom right. Highly detailed, dramatic lighting, industrial mecha design.