"Hrm. That would be a terrible amputation to attempt," Watson says, thoughtfully. "Probably best you did not. And no, I have not heard of any such thing here. Well." He lets out a small, wry laugh. "We did have a sort of shared dream of other versions of ourselves, and that other version of me certainly was, at times, a seal, but that was temporary."

He did secretly enjoy being a selkie, just a little.