Biologists measure, number and tag freshwater mussels from Deer Creek at Rocks State Park to reintroduce the species to the Patapsco River. (Credit: Maryland DNR)

Bringing back natural water filters in Maryland and beyond

Maryland is the latest state to take steps toward bringing back freshwater mussels

ELLICOTT CITY, Md.—Under the waters of the Patapsco River in Maryland, new life is forming.

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