Photo of a purple sea urchin. Photo by Diego Delso of Wikimedia.org. This photo is licensed under the Creative Commons Attribution-ShareAlike License.
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Sea Urchin Fun Fact: A fun fact about sea urchins is that they can regenerate their spines if they lose them! These spines serve as both a defense mechanism against predators and a way to help the urchin move across the ocean floor. If damaged, sea urchins are able to grow new spines, ensuring they stay protected and mobile in their environment.
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