Who were Triton and the Kraken in mythology?

Triton was the son of the Greek god Poseidon (known as Neptune to the Romans), the god of the sea. He was a merman, with the upper body of a human and the tail of a fish. His shoulders were barnacled with seashells. Like his father, he carried a trident, but he also used a twisted conch shell like a horn, blowing it to calm the waves or whip up a terrible tempest. Triton helped Jason and the Argonauts make it back to the sea on one of their adventures.

The Kraken were giant sea monsters, found in Norse and Icelandic mythology. Often depicted as gigantic octopuses or squids, they were thought to rise up from the deep, grappling and then sinking small ships. Other myths held that the greatest dangers from the Kraken were the whirlpools left behind from their descent back into the depths of the sea. The Kraken has appeared in the movies Clash of the Titans and Pirates of the Caribbean.