Triton of the Sea (海のトリトン, Umi no Toriton) is a 1969 Japanese manga series created by Osamu Tezuka for Kodansha.

The manga was adapted by the Asahi Broadcasting Corporation into a 27-episode anime television series from April 1 to September 30, 1972, directed by Yoshiyuki Tomino (in his directorial debut).

The white dolphin Ruka took the orphaned Triton to the caves in coastal Japan to protect him from his enemies.

As he grows older, Triton returns to the sea to take revenge on the Poseidon family.

With his dolphin friends Ruka, Uru, Karu and Fin, he proceeds on a one-man war against the Poseidon family.

During his battle with one of Poseidon's sons, Triton came to know Ganomosu, the big turtle who has lived for many years at sea and is very wise.

Ganomosu advised Triton to live on a floating island which is his granddad's shell and is surrounded by seven whirlpools.

Meanwhile, Triton, out of anger, triggered huge tsunamis to hit Tokyo at Poseidon's suggestion.

When the manga was originally serialized one page at a time in the Sankei Shinbun, it was called Blue Triton (青いトリトン, lit Aoi Toriton).

The name was changed later when the anime series began on television, and then it became Triton of the Sea (海のトリトン, lit Umi no Toriton).