Phylum-Echinodermata The members of Phylum Echinodermata are exclusively marine animals, till now these are not found as terrestrial or freshwater. About seven thousand living species are included in this phylum. The adults are recognizable by their radial symmetry. The Phylum includes starfish, sea urchins, sand dollars, and sea cucumbers, as well as sea lilies or “stone lilies. The Echinoderms are the largest phylum that has no freshwater or terrestrial members. Characteristics features of Echinoderms Phylum-Echinodermata consists of the following characteristic features: These are spiny bodies and have an endoskeleton of…
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