Nassarius clarusNassarius clarus is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.DescriptionThe length of the shell varies between 16 mm and 30 mm.DistributionThis marine species occurs off Western Australia and in the Indian Ocean.EcologyNassarius clarus feeds on dead fishes and other carrion.