Important features of echinodermata

Phylum Echinodermata includes marine invertebrates such as starfish, sea urchins, and sea cucumbers. They are characterized by radial symmetry, a water vascular system for movement and feeding, and an endoskeleton made of calcareous plates. General Characteristics: 1) Habitat: The echinoderms are exclusively marine, non-colonial and largely bottom dwellers.  2) Body: They are triploblastic, coelomate animals. 3) Symmetry: The … Read more