Molluscs

Who are they?

The molluscs are a highly diverse, ancient group of soft-bodied invertebrates. Major groups include gastropods, bivalves, cephalopods and chitons.

Characteristics

• Soft bodied

• A thin membrane (mantle) encases major organs

• Mantle secretes shell (if present)

• Specialised tongue called a radula

• Haemocyanin-based blood

• Breathing usually by gills

• No paired jointed appendages