Coscinasterias muricata, eleven armed seastar

Coscinasterias muricata Lamarck 1816

eleven armed seastar

 

The eleven armed seastar, Coscinasterias muricata, may have between nine and fifteen arms, but usually has eleven

It feeds on sea urchins and molluscs

Distribution =  southern Australia and NZ
Max size =  arm radius to 25cms
Family =  Asteriidae