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The "dead zones" in the Chesapeake Bay—areas with little to no oxygen in the water—remain a significant concern for aquatic life, with recent …
The Chesapeake Bay Program says this year’s dead zone in the Chesapeake Bay was the smallest on record, mainly due to pollution reduction and below-average rainfall.
Crabs and all marine life need oxygen. But a study from Maryland's Department of Natural Resources has found low levels of dissolved oxygen in the Chesapeake Bay.