Sea Horse
In Brazil there exists a variant of this myth: it tells of a horse that lives in the sea or in rivers and is considered part of the diabolic legion. It tends to appear on the crest of a hill when there is a lake nearby, where it is seen as a fish in the shape of a horse or a kind of deformed mermaid. White in color, it has a golden mane and tail. Its presence is believed to be a sign of ill omen. If it pursues vessels it can even cause them to shipwreck. To drive it away, a figurehead on the prow bearing its own image is said to be effective.
In southern Chile, there is a legend that tells of an ordinary horse endowed with an extraordinary ability: at night it can walk upon the waters, lit by a lantern fueled with human oil, a combustible it obtains from witches who give it to the horse as payment for its courier and transport services. For this fabulous horse carries witches to their sabbaths. When its work is done, it makes its way to the sea. It lives only four years, and its remains turn into a gelatinous mass that swiftly dissolves into the sea.