FAQ
Explore our frequently asked questions to learn more about the Chesapeake Bay and its watershed, habitats and wildlife.
Oysters
What is the ideal salinity for eastern oysters?
Oysters prefer brackish and salty water. A salinity range between 10-28 parts per thousand (ppt) provides the best conditions for oysters. Oysters can die if salinity drops below 5 ppt for extended periods of time.
Why has the Chesapeake Bay’s oyster population declined over time?
A number of factors have contributed to the decline in the Chesapeake Bay’s oyster population, including over-harvesting, disease (like MSX and Dermo), sedimentation and poor water quality.
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