The Wave of Rage
Deep below the sea off the coast of Okinawa, the Ocean Technopolis is at the forefront of humankind's efforts to adapt to catastrophically rising sea levels, but it's caught in the middle of escalating tensions between Japan and Taiwan. Based on the 1995 novel by Katsufumi Umehara.
Directors: Yoshio Takeuchi
Writers: Masashi Sogo, Yoshio Takeuchi
IMDB: tt0163388