Is A Sea Urchin An Invertebrate?
Is A Sea Urchin An Invertebrate? Sea urchins and all other echinoderms are invertebrate deuterostomes and, together with the hemichordates, form a sister group to the chordates. Is a sea urchin a plant or invertebrate? A sea urchin is a small marine animal in the Echinodermata phylum that is spherical in shape and covered in