The Nuckelavee is the most horrible of all the Scottish elves. He lives mainly in the sea, but was also held responsible for ruined crops, epidemics, and drought. His breath could wilt the crops and sicken the livestock.
He looks like a horse whose legs are part fin; he has an enormous snout-like mouth, and a single, fiery eye. His arms reach to the ground, his body is distorted and his huge head sways on a small neck, as if it is to weak to hold the head.
The most gruesome about his appearance is the fact that he has no skin. Black blood courses through yellow veins and the pale sinews and powerful muscles are clear to see. He has an aversion of running water and those who are chased by him have only to cross a stream to get rid of him.
For the mythic figure of Scottish folklore, see Nuckelavee.