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Echinoderms are marine animals of the class Echinoidea that are characterized by radial symmetry, such as the [[sea urchin]] or with multiple arms radiating from a central body, such as [[Starfish]].
Echinoderms are marine animals of the class Echinoidea that are characterized by radial symmetry, such as the [[sea urchin]]. It also includes those with multiple arms radiating from a central body, such as [[Starfish]] and [[brittlestar]]s..
[[Category: Invertebrates]]
[[Category: Invertebrates]]