By Ed Rodgers
Watch as volunteers rescue thousands of horseshoe crabs in Delaware Bay on the Northeast seaboard late last month as higher than usual tides hit the area.
The delicate Delaware Bay ecosystem, which provides thousands of migrating shorebirds with their food supply as they travel from South America to the Arctic, is being threatened by sea level rise.
Migrating shorebirds, including the federally listed threatened ted knot, eat the horseshoe crab eggs. The Delaware Bay is home to the largest spawning population of horseshoe crabs in the world.