#sea_urchin__seaurchin shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
supertype: echinoderm marine invertebrates with tube feet and calcite-covered five-part radially symmetrical bodies
subtype: edible_sea_urchin sand_dollar heart_urchin
member of: class_Echinoidea__Echinoidea sea urchins and sand dollars
member of: phylum_Echinodermata__Echinodermata radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers
member of: kingdom_Animalia__Animalia__animal_kingdom taxonomic kingdom comprising all living or extinct animals
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