Concept: water element: seaking
living on the ocean's deep, the seaking is composed almost completely of water, using a jellyish-like shell to protect his inner organs from the outlying waters. the seaking usess his long, poisonous tentacles to catch prey. but he is also equipped with a long neck and beak, armored with ice.
how the creature regulates the temperature of the water for this purpose, while mainaining free flowing currents within, is unknown.