Bivalves.
Bivalves are a class of molluscs with a shell of two, often equally symetrical, valves.
They are found in a range of freshwater and marine habitats. Bivalves are filter feeders are are often found burried in sand or mud.
Bivalves are an important food source, with include clams, mussels, oysters, pipis and scallops commercially farmed or harvested for food.
