Meridiastra mortenseni (O'Loughlin, Waters & Roy, 2002)
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)
> Valvatida (Order)
> Asterinidae (Family)
> Meridiastra (Genus)
North, South and Stewart Islands
Marine, Endemic. Very similar to Patiriella regularis, but smoother appearance when wet