The Nuckelavee is a creature from Orcadian folklore, specifically associated with the Orkney Islands in Scotland. It is often depicted as a horse-like demon with a human rider, characterized by its grotesque appearance, including a lack of skin and a body that reveals its muscles and veins. The Nuckelavee is known for its malevolent nature and is said to bring disease and destruction to crops and livestock. This mythical being is often linked to the sea and is believed to emerge from the water, particularly during the summer months. The Nuckelavee is also associated with the Norse mythology of the region, reflecting the cultural influences of the Vikings on Orcadian legends. Its fearsome reputation serves as a cautionary tale about the dangers of the natural world.