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A purple sea urchin is not a mammal.

Mammals are vertebrates while sea urchins are invertebrates. Additionally mammals are warm blooded, have lungs, have fur, give birth to live young (with the exception of the egg laying platypus), feed their young on milk. I don't think a purple sea urchin any of those criteria.

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โˆ™ 2011-02-26 00:11:19
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Q: Is a purple sea urchin a mammal?
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