The Seafolk

The Seafolk is the broad name for multiple aquatic races of both Fey and elemental origin encountered in and adjacent to the Feywild and are the subject of a large body of folklore, particularly in coastal areas or regions with large bodies of water. In folklore these "breeds" have many names and subgroups such as the Nixie, Nereids, Tritons, Mermaids, Sirine among others.

The Half Elf Castaway of Saltmarsh claims to have been found by these beings as a child and raised to adulthood among them.