what are sea urchins
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Sea urchins, or simply urchins, are typically spiny, globular animals, echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal to 5,000 metres. Their tests are round and spiny, typically from 3 to 10 cm across.
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Explanation:It is commonly found along rocky ocean floor in both shallow and deep water.It is an omnivore and mainly feeds on algae
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