The nannerpus (plural nannerpi, nannerpods, or nannerpuses), is a member of a group of terrestrial soft-bodied invertebrates that has evolved a thick skin similar to the peel of a banana.
The common nannerpus has a somewhat elongated “head” with four or more flat tentacles emerging from its ventral surface, lending it the appearance of a cartoon banana peel. While its name suggests a similarity to cephalopods, it is in fact more analogous to a starfish, with many tube feet on the undersides of its arms and an annular mouth in the middle rather than a hard beak.
Its thick but supple skin is mostly yellow mottled with brown and black spots. Its eyes are located on the base of its body above where the arms meet. The number of eyes vary by species but usually there are as many eyes as arms. The eyes are unlike those of Yih vertebrates, being humor-filled balls with lenses rather than the featureless black “radio eyes” seen in vertebrates.
The common nannerpus feeds on the fruiting bodies of a particular variety of fungus that are round and flat. it parks itself on top of the fungus and scrapes bits of flesh off with its mouth.