Astropecten polyacanthus Müller & Troschel, 1842
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)
> Paxillosida (Order)
> Astropectinidae (Family)
> Astropecten (Genus)
Northern North Island to East Cape, NZ and Kermadec Islands. Also widespread in other areas of the Pacific
Marine. 5 straight arms, edged with sharp pointed spines. Intertidal to sublittoral