Morula spinosaMorula spinosa, the spinose rock shell, is a species of sea snail, a marine gastropod mollusc in the family Muricidae, the murex snails or rock snails.DescriptionThe shell size varies between.DistributionThis species is distributed in the Red Sea, in the Indian Ocean along Aldabra, Chagos, the Mascarene Basin and Tanzania; and along Japan.