Selkies (Irish/Scottish Gaelic: selchidh) are mythological creatures found in Scottish, Irish, and Faroese folklore. The word derives from earlier Scots selich, (from Old English seolh meaning seal). Selkies are said to live as seals in the sea but shed their skin to become human on land.
Stories concerning selkies are generally romantic tragedies. Sometimes the human will not know that their lover is a selkie, and wakes to find them gone. A selkie can only make contact with one human for a short amount of time before they must return to the sea. They are unable to make contact with that human again for seven years, unless the human steals their selkie skin and hides it or burns it.