The Cushion Star is related to Starfish but does not exhibit its radial symmetry so obviously. They are fleshy to the touch with a tough skin with tubercles. They are creatures of the tidal zone

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africa aquarium trade asteroidae biscuit sea stars coral reef culcita schmideliana cushion star defence detritivore domed echinodermata empty case evert stomach five rows hydraulics indian ocean littoral low tide lower shore marine mouth underneath nativity star oreasteridae over-utilization protection radial bands radial symmetry radiating regenerate relative of sea urchin resembles sea-urchin sea star sea water seashores sedentary shallow waters slow moving starfish starfish relative suckers tanzania tough skin tropical tropical seas tubercles valvatida vegetarian young pentagonal zanzibar
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