. . . . . "Not to be confused with Tantalum.Tantulum elegans is a species of freshwater slug, an aquatic shell-less gastropod mollusk within the clade Acochlidiacea.This species has no shell. The maximum recorded length is 2 mm.Tantulum elegans is the only species in the genus Tantulum, and that is in turn the only genus in the family Tantulidae."@en . . .