crabs

In the Chesapeake Bay, underwater seagrass beds are growing, sheltering crabs and fish. The long-awaited recovery depends on efforts by farmers to prevent nutrients from polluting the giant estuary.

A new study finds a link between warming waters and a dangerous neurotoxin that builds up in species like Dungeness crabs, clams and mussels — and can be hazardous, even fatal in people who eat them.