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It's a sea urchin.

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Q: What is a small sea animal with round body in a shell covered with sharp spines?
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Are monotremes only covered with skin?

No. The platypus is covered with dense, waterproof fur, and the echidna is covered with sharp spines.


How sea urchins protect themselves?

A sea urchin's body is covered in sharp spines.


What is an animal covered in spines?

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An echidna's body is covered with spikes, or spines. These spines are not poisonous, but they are sharp and offer the echidna protection from predators.


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What are the disadvantages of a cactus having sharp spines instead of leaves?

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Does an echidna have fur?

Yes. While many people believe echidnas only have spines, they are actually covered with a very thick layer of coarse hair. The sharp spines grown throughout the coarse hair.


Does the female echidna have sharp spines?

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Which body characteristic is effective in helping echidnas escape from predators?

An echidna is covered with sharp quills. Its nickname is "spiny anteater" because it has so many sharp quills, or spines, which help defend it against predators.


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