Time-lapse: Oysters Filtering Water

Excerpt from The Chesapeake Bay Foundation's documentary "Common Ground"

Oysters provide much-needed filtration of Chesapeake Bay waters, habitat for other aquatic life, and a modest commercial harvest. CBF estimates the oyster population to be as low as 4 percent of historic levels. Restoring the Chesapeake's native oyster population is key to bringing back the Bay's health.

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