>>95909694
A repost of mine, but I liked it and it still fits
Rusulka
Eastern european lake/pond mermaid. Not particularly dangerous in old myths. Mostly just sort of like walking along in the woods and accidentally coming across a naked woman taking a bath. Still technically a type of faerie though so your mileage may vary. Depicted here as a version I used in this setting >>95899532
Basically a Rusulka for the tarsands.