Nereid

The Nereids are sea nymphs  the 50 daughters of Nereo a sea god and Doris daughter of Oceano and Thetys. The Nereids are associated particularly with the Aegean sea, where they inhabit with their father Nereo in the depths, The best known of it is Thetis, wife of Peleo and mother of Achilles; Amphitrite, wife of Poseidon.

In mythology they symbolized all that is beautiful and kind of the sea. Their melodious voices sang as they danced around their father. They Are represented as beautiful girls, crowned by branches of red coral and dressed in white silk robes adorned with gold.

They are mentioned in  Hercules & Xena Roleplaying Game by West End Games.