Increase in marine heat waves threatens coastal habitats. 

 With continued warming, Chesapeake Bay will suffer extreme heat for half the year by 2100 

Heat waves—like the one that blistered the Pacific Northwest last June—also occur underwater. A new study in Frontiers in Marine Science paints a worrisome picture of recent and projected trends in marine heat waves within the nation’s largest estuary, with dire implications for the marine life and coastal economy of the Chesapeake Bay and other similarly impacted shallow-water ecosystems.