Molluscs possess a soft body consisting of a head with sense organs, a muscular foot for creeping or digging, and a visceral mass comprising of the gut, reproductive and excretory organs. Most species possess a hard calcium carbonate shell, although in most cephalopods it is internal, and in slugs and octopuses the shell is reduced or absent.

Chitons (Polyplacophora)

0 species (0 including subcategories)

oysters, mussels (Bivalvia)

4 species (4 including subcategories)

Snails and Slugs (Gastropods)

11 species (11 including subcategories)

Squid, cuttlefish, octopus (Cephalopoda)

1 species (1 including subcategories)

There are currently no species belonging to the biodiversity category, Molluscs (Phylum Mollusca).