Roshwalr
In Norwegian folklore, the Roshwalr is a horse-whale, a vest whale with the head of a horse. A severed head of a Roshwalr was sent to Pope Leo X 1520 and drawn by the naturalist Ambroise Pare. It is realised now that the Roshwalr was none other than a walrus.
John and Caitlin Matthews, The Element Encyclopaedia of Magical Creatures, 2013, Roshwalr, p 395
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