Mariya's a daughter of Poseidon.
EARLY LIFE Edit
Mariya does not remember her life. All she knows is that one day a girl said that she had drifted ashore from the sea. Mariya however, did remember one thing that she was the daughter of Poseidon and then the two girls along with a satyr made their way to Camp Half Blood. She was claimed by her father soon after her arrival with her best friend Lilian.
Can breathe underwater