Morag and the Water Kelpie
Kelpies were the most dangerous supernatural creatures to be found in Scottish mythology. The Kelpie was the best known type of water-horse and it was usually found by seas and lochs.
Kelpies were known to lure travellers into deep water at what looked like, shallow, crossable waters. The creature also carried unsuspecting travellers into deep waters on its back. In these circumstances, it could appear in the form of a docile, young horse and parade itself infront of the unsuspecting victim, seemingly inviting them to get on its back. With its prey on board, the Kelpie would then bolt into the water, its victim magically unable to dismount and dragged into the water.