NOAA scientists estimate they saw about 10 billion sea scallops off Delaware and southern New Jersey this spring as part of an annual survey. Andrew Martinez/Science Source hide caption

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Crew members pull an oyster dredge in Tangier Sound of the Chesapeake Bay near Deal Island, Md., in 2013. A study found that the Chesapeake Bay shellfishery is a "hot zone" for ocean acidification. Patrick Semansky/AP hide caption

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Clams this fresh taste like tender calamari. Martin Kaste/NPR hide caption

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