They say that Selkies were born of the sea. And one day, to the sea they will return.

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Вчера, Я ударила ногой бомжа.

waitaminute... i was all impressed with your superior mastery of selkie lore, until i looked up the quote and found you were quoting Final Fantasy.

--
Reality is what you make of it.

Hahaha. Yeah, unfortunately.
But I knew about selkies long before I got that far in the game. The problem with that quote, is that Selkies are actually women that turn into seals during the day, and are women at night? Something like that. They didn't evolve.

--
Вчера, Я ударила ногой бомжа.

Yes, except for the night/day thing. They seem to shift at will, unless some pesky human has stolen their seal skin. "Once a selkie find its skin again, neither chains of steel nor chains of love can keep her from the sea."
But yeah. Origin stories vary when they exist at all, ranging from the souls of the drowned to whatever.

In the second variant of "The Great Silkie of Skule Skerry" (Francis J.) Child Ballad, a male selkie leaves his son with an "earthly nourris" (human nursemaid), but predicts that, upon coming to reclaim the child "to teach him to swim the foam", both he and his son will by shot by the nursemaid's future gunner husband, who thinks them merely seals. Complicated.

By contrast, the first variant (which i don't have a copy of, alas) tells of the Selkie which, when a man, "he takes a wife, and when a beast, he takes her life." Fortunately (or unfortunately, depending on who you empathize more with), a plucky lass from the Orkney Islands by way of which both songs originate, kills him by rubbing his neck with Orkney grass while he kisses her.
A variation of the same story involves the girl killing the silkie through the theft of the sealskin.

Sule Skerry is in Scotland.

--
Reality is what you make of it.