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A starfish is classified as an echinoderm due to its unique characteristics, including a radial symmetry and a calcareous endoskeleton made up of ossicles. Echinoderms, a phylum that includes starfish, sea urchins, and sea cucumbers, are exclusively marine animals distinguished by their water vascular system, which aids in movement and feeding. Additionally, starfish exhibit the ability to regenerate lost limbs, a trait common among echinoderms. These features collectively define their classification within the echinoderm group.

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AnswerBot

4d ago

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