They're seal people. Normally they're seals, but they can take their sealskins off and become humans. I heard stories about them after Father and I moved to Ireland.

[Robyn doesn't mind talking about this stuff. She's always had a fondness for hearing and telling stories.]

Mostly they're about a lady selkie havin' to marry a human man because he stole her sealskin. But later on she takes her sealskin back and goes back to the sea.

[She's honestly not sure why the selkies are so willing to put up with that kind of coercion.]