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Sea urchins are considered a culinary delicacy, but supply can't keep up with demand. Aizat Faiz/Flickr hide caption

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Aizat Faiz/Flickr

Young oysters live on old oyster shells and slowly mature while forming a complete shell. Astrid Riecken/Washington Post/Getty Images hide caption

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Astrid Riecken/Washington Post/Getty Images

Can Oysters With No Sex Life Repopulate The Chesapeake Bay?

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