Every summer, our crabs, fish and oysters face a terrible menace to their survival – as much as 40+ percent of the Chesapeake Bay becomes a dead zone with insufficient oxygen for them to breathe. Not surprisingly, the Bay’s marine life is dying off. In the last seventeen years, the population of blue crabs in the Chesapeake Bay has plummeted 67%. Oysters, which used to be the Bay’s most profitable commercial fishery, have declined to 1% of the levels seen in the 1950s and 1960s. Fish kills of 100,000 or more fish at a time regularly occur each summer.