Four side plates, forming a wide conical shape. Colour varies from grey-white in young animals, to pink in older animals. Opening pentagonal shape. Up to 1 cm high, 3 cm wide.
The anatomy of this species is more advanced than some of their close relatives. They filter plankton from fast flowing water to feed.
Exposed rocky shores, at mid to high tide levels, to depth of 58 m.
Eastern Australia, except Tasmania. Eastern Victoria.
Plankton or Particles
Native to Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed