Coscinasterias muricata Verrill, 1867
This is not a Mollusc. Other non-Molluscan Phyla (Echinodermata, Brachiopoda etc) have been included to help identify species that may be mistaken for Mollusca, but actually are not.
Echinodermata (Phylum) > Asterozoa (Subphylum) > Asteroidea (Class)
> Forcipulatida (Order)
> Asteriidae (Family)
> Coscinasterias (Genus)
Found throughout mainland NZ and Australia
Marine. Pale orange, grey/blue with 11 arms. Intertidal to sublittoral