If the water vascular system of the echinoderm was eliminated, locomotion would not exist anymore.
Echinoderms belong to the class of phylum Echinodermata and are marine vertebrates that include starfish, sea urchins, sand dollars, sea cucumbers, and crinoids.
They belong to the most diverse group of vertebrates and have far-reaching impacts on the marine ecosystem of the oceans.
Moreover, they play decisive ecological roles near sea shores and in depths.
They have elongated, spherical, or star-like appearances and also exhibit spinny-skinned characteristics.
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