★ A starfish has no brain, no nervous system.
★ A starfish possesses the power of regeneration and can regenerate its arms.
★ Starfish are not fish but members of the Echinodermata Phylum and is called "Echinoderm"
★ Besides having regeneration power, Echinoderms also possesses a distinctive "Water Vascular System" which primarily is concerned with locomotion since they don't have any special organs developed for it.
★ As star-fish don't have any brain therefore their motion depends on the availability of water.
★ Starfish can only move when there is water.
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