Triton of the Sea (1972)
Original title: 海のトリトン
Triton of the Sea is a 1972 Japanese-language animation series created by Osamu Tezuka. It stars Yoku Shioya, Akemi Hirokawa and Haruko Kitahama.
5000 years ago, the Triton Family was living peacefully in Atlantis until the Poseidon Family destroyed them all. Triton, of the Triton Family line, embarks on an adventurous life in the sea fighting the Poseidon Family.