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Sea Urchins got their name from the fact that Hedgehogs used to be referred to as Urchins until the 15th century. This is because Sea Urchins are essentially Ocean Hedgehogs.

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Fun Fact:

Sea Urchins got their name from the fact that Hedgehogs used to be referred to as Urchins until the 15th century. This is because Sea Urchins are essentially Ocean Hedgehogs.

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