Mollusca

large phylum of invertebrate animals Mollusks (Mollusca) is a phylum containing organisms that share fundamental body plan characteristics. It contains 6 classs with 1,087 known species. This includes the class groups Bivalvia, Caudofoveata, Cephalopods, Gastropoda, Polyplacophora, and Scaphopoda. Among its members, 124 species are currently classified as threatened (Critically Endangered, Endangered, or Vulnerable). It belongs to Animals (Animalia).