The U.S Fish and Wildlife Service wants to add the southern elktoe, a rare freshwater mussel found only in the Apalachicola, Chattahoochee, and Flint River Basins, to the endangered species list.

An estimated 1 billion sea creatures, mostly mussels, died in the heat wave last week along Vancouver's shorelines. But the marine biologist taking count worries the actual number will be much higher.