Creepy 'Human Fish' Can Live 100 Years

The olm (Proteus anguinus), a foot-long salamander nicknamed 'the human fish' because of its fleshy skin and tubular shape, is certainly a strange-looking animal. This animal is most notable for its adaptations to a life of complete darkness in its underground habitat. The olm's eyes are undeveloped, leaving it blind, while its other senses, particularly those of smell and hearing, are acutely developed.

But beneath the surface, they're even weirder: Olms can live for 100 years, far longer than any other amphibian. Scientists have no idea why. LINK: The Presurfer