Four white-grey side plates (red-brown in young animals), with white ridges that radiate from the opening to the edge. One black spot on the white mantle (seen in the opening when the animal emerges). Opening diamond shape. Up to 12 mm high, 1 cm wide.
This species can tolerate silt and fluctuating salinity. It is often found in estuaries or attached to ships.
Rocky shores, to depth of 90 m.
Plankton or Particles
Native to Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed