Thalassa

Thalassa (Θαλασσα) was the Greek primordial goddess of the sea. She was usually depicted as a woman half-submerged in the sea with crab claws coming out of her hair and wearing seaweed for hair. She was also typically holding an oar. She was a daughter of Aether and Hemera and was the wife of Pontus. By Pontus, she mothered the fish of the sea. Without a consort, she mothered Halia.

In Roman mythology, Thalassa was known as Mare.