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Underwater grasses and a crab pot near Crisfield, Md. In the Chesapeake Bay, underwater seagrass beds are growing, sheltering crabs and fish. The long-awaited recovery depends on efforts by farmers to prevent nutrients from polluting the giant estuary

© Peter Essick / Getty Images / Aurora Creative
Underwater grasses and a crab pot near Crisfield, Md. In the Chesapeake Bay, underwater seagrass beds are growing, sheltering crabs and fish. The long-awaited recovery depends on efforts by farmers to prevent nutrients from polluting the giant estuary photo copyright Peter Essick / Getty Images / Aurora Creative taken at  and featuring the Fishing boat class
Fishing boat
Grass is back in the Chesapeake, and crabs will follow
For scientists who monitor the health of the Chesapeake Bay, the nation's largest estuary, simply watching grass grow underwater can be very, very exciting.