Four brown side plates (red-brown in young animals), with white ridges that radiate from the opening to the edge. Six pairs of black spots on the white mantle (visible in the opening when the animal emerges). Opening pentagonal shape. Up to 5 mm high, 2 cm wide.
Secret Four-plated Barnacles live in similar habitats to the related Modest Four-plated Barnacle, but usually attach to rocks higher on the shore.
Estuaries and sheltered bays, at mid to high tide levels.
Plankton or Particles
Native to Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed