Amphitrite

Amphitrite is the Queen of the Sea, wife of Poseidon and sea Goddess in the Earth Galaxy of Gods and Myths.

She resides in the Palace of Atlantis with her husband and, like many of her godly kind like to do, sometimes wanders her Earth in humanoid form. As all Gods, she possesses the ability to change her appearance without limits - yet she prefers the form of a tall, dark haired woman with fair skin and ocean green, piercing but warm eyes.

See also: Amphitrite in the Riordan Wiki