Deep Sea Future

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 "{argument name="hull text" default="NEREIS-01"}" painted on its side. Behind it looms a {argument name="creature type" default="colossal bioluminescent anemone-like entity"} with radiating tentacles tipped with cyan lights. The dark teal abyss features glowing seabed flora. Top left text includes the Japanese title "{argument name="main title" default="深淵の地平線"}", the subtitle "{argument name="english subtitle" default="ABYSS HORIZON"}", and the tagline "{argument name="tagline" default="暗黒は、終わりじゃない。人類の新しい始まりだ。"}". 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.