Origin: England - They are foal-like water fairies. Also called water horses, they drag humans who ride them underwater to drown. They sometimes appear as men, but are easily distinguished by the seaweed in their hair. They make excellent mounts if they can be caught, but curse those who treat them badly. In some cases, their upper body is a horse and their lower body is a fish.
The Kelpie is an evil water demon that lurks in lakes and rivers. If a traveler stops by a lake to rest and sees a horse grazing, it may be a Kelpie. Trying to mount the horse will only result in the traveler ending up in the lake.
Kelpies resemble horses and eat the grass that grows by the waterside. If you touch one, you will never be able to let go. Those who try to climb on a Kelpie's back are dragged underwater and drowned. Kelpies are swift of foot and, if caught, make excellent steeds. Treating them roughly, however, will result in a curse.
A fairy of Celtic folklore that lives by the water that looks like a horse. It is friendly at first goading you to ride it, but tries to drown those who do. Once tamed, it is a mighty loyal steed.
Japanese