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Ecological upheaval on the edge of the ice
Continue to the storyIn the past six years, snow crab catches have dropped 85 percent. Most other crab species are in a similar slump. Overfishing is probably a factor — but not the only one. Biologists also have documented a northward shift of crab populations, away from warming waters in the traditional fishing grounds of the southern Bering Sea. Fur seal numbers are dwindling, despite a 20-year-old ban on commercial hunting. Stellar sea lions were declared endangered in 1997. Seabirds that once flocked to the region by the millions are in precipitous decline.