Each-uisge
The each-uisge (Scottish Gaelic: [ɛxˈɯʃkʲə], literally "water horse") is a water spirit in Irish and Scottish folklore, spelled as the each-uisce (anglicized as aughisky or ech-ushkya) in Ireland and cabbyl-ushtey on the Isle of Man. It usually takes the form of a horse, and is similar to the kelpie but far more vicious.