The mummified remains of a creature with unusual anatomical characteristics, including long upper limbs, powerful jaws with sharp teeth, and a prominent tail fin, were discovered in an old house in Japan's Fukushima prefecture, the Sun reports.

The discovery's physical description echoes the image of a kappa, a figure from Japanese mythology. According to folklore, this aquatic creature inhabits rivers and lakes and is considered dangerous to both humans and livestock.

The origin of the object has not been determined. Experts are currently refraining from making definitive conclusions regarding its nature.

The artifact's owners intend to present it to the public at a special exhibition and then auction it off. The starting price is approximately 11 755 pounds sterling.