Eastern Oyster

A Maryland Department of Natural Resources study released in 2011 showed higher levels of oyster reproduction and a lower mortality rate for the Chesapeake Bay oyster, reaffirming CBF's extensive restoration efforts. Photo by Tom Pelton/CBF StaffA Maryland Department of Natural Resources study released in 2011 showed higher levels of oyster reproduction and a lower mortality rate for the Chesapeake Bay oyster.  Photo by Tom Pelton/CBF Staff.

Great Shellfish of the Bay

Since colonial times, the Chesapeake (meaning "great shellfish Bay" in Algonquin) has lost more than 98 percent of its oysters. Gone are the days when oyster reefs posed navigational hazards to Chesapeake Bay explorers or watermen pulled 17 million bushels of oysters each year. Now, Maryland and Virginia watermen and the seafood industry have lost $4 billion in income in the past 30 years alone. But as recent studies find, all is not lost.

A two-month Maryland Department of Natural Resources survey conducted in 2011 revealed higher levels of oyster reproduction and a lower mortality rate. In fact, Chesapeake Bay oysters seem to be growing heartier and more robust. Given that each adult oyster filters and cleans up to 50 gallons of water per day—gobbling up algae, and removing dirt and nitrogen pollution—that's good news for the health of the Chesapeake Bay and for us.

After a devastating bout with disease in the late 1980s combined with decades of overharvesting, habitat destruction, and water pollution, the oyster was hanging on by a thread. "That was a turning point really," says CBF Fisheries Director Bill Goldsborough, "because up until that point, for the previous 100 years, oysters had supported the most valuable fishery in the Chesapeake Bay."

Now, thanks to increased awareness, extensive restoration efforts such as CBF's citizen oyster-gardening program and reef ball production, resisting the introduction of a non-native oyster species, and favorable weather conditions, there is hope for the mighty oyster yet.

Learn more about CBF's oyster restoration efforts.

You may also be interested in:
  • A New Day for Oysters Maryland's Harris Creek is host to one of the largest oyster restoration projects ever undertaken in the Chesapeake Bay.
  • Maryland Oyster Restoration Center CBF's Oyster Restoration Center serves as the central location for all of CBF’s oyster restoration activities in Maryland.
  • Virginia Oyster Restoration CBF's oyster restoration programs offer citizens the tools and information needed to help restore native oysters
  • Building a Future for the Chesapeake's Oysters Today, there are important new reasons for hope for the Chesapeake Bay's keystone species.
  • Spat Catcher Program Each spring, volunteers from the Lafayette River area hope to attract swimming oyster larvae to special cages suspended from piers and docks.
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