Nereid

In Greek mythology, the Nereids ( Nereides) are sea nymphs, the fifty daughters of Nereus, the Old Man of the Sea, and the Okeanid Doris. 

Among them are:
Thetis - Wife of Peleus and mother of Achilles, she was often considered the leader of the Nereids. 
Amphitrite - Wife of Poseidon and queen of the sea. 
Galatea
Thoosa - mother of the Cyclops Polyphemus. 
Dione (mythology)

Category:Nymphs
Category:Gods and goddesses of water