Isn't there a traditional song called "The Great Silkie of Sule Skerry"?

(As far as I know, "Silkie" comes from the Norse word for Seal, and "Sule Skerry" is in some of the Scottish Islands (possibly Orkney, or maybe Shetland/Hebrides).

There is a Selk Island just off the coast of Co. Down, Northern Ireland, which, I have read, was named after the Norse word for Seal.