Dermechinus horridus (A. Agassiz, 1879)
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 are not.
Echinodermata (Phylum) > Echinozoa (Subphylum) > Echinoidea (Class) > Euechinoidea (Subclass) > Camarodonta (Order) > Echinidae
(Family) > Dermechinus
(Genus) > horridus (Species)
From 200-1200 metres