A sea nymph, in mythology, is a nature deity of the sea, or spirit of sea waters. They have a bit of control of the water and can seemingly just walked out from it

These can be ordinary people and you can't really tell if they are nymphs or not. They like to live close to the water though and some even live in it

They are very close to fish and often the merfolk as well. They can choose their own appearance so sometimes they have gills and sometimes they don't

There isn't much else to say about these creatures