Thousands of Walruses Die in Mass Stampedes

Polar bears getting the global-warming jump on the walrus population..

ANCHORAGE, Alaska — In what some scientists see as another alarming consequence of global warming, thousands of Pacific walruses above the Arctic Circle were killed in stampedes earlier this year after the disappearance of sea ice caused them to crowd onto the shoreline in extraordinary numbers.

The deaths took place during the late summer and fall on the Russian side of the Bering Strait, which separates Alaska from Russia.

"It was a pretty sobering year — tough on walruses," said Joel Garlach-Miller, a walrus expert for the U.S. Fish and Wildlife Service.

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Unlike seals, walruses cannot swim indefinitely. The giant, tusked mammals typically clamber onto the sea ice to rest, or haul themselves onto land for just a few weeks at a time.

But ice disappeared in the Chukchi Sea this year because of warm summer weather, ocean currents and persistent eastern winds, Garlach-Miller said.

As a result, walruses came ashore earlier and stayed longer, congregating in extremely high numbers, with herds as big as 40,000 at Point Shmidt, a spot that had not been used by walruses as a "haulout" for a century, scientists said.

Walruses are vulnerable to stampedes when they gather in such large numbers. The appearance of a polar bear, a hunter or a low-flying airplane can send them rushing to the water.

Sure enough, scientists received reports of hundreds and hundreds of walruses dead of internal injuries suffered in stampedes. Many of the youngest and weakest animals, mostly calves born in the spring, were crushed.

"Its a known fact that polar bears in this region are keeping track of global warming," Mr. Miller went on to say, "being the worlds most smartest bear going against some of the worlds most dumbest creatures means it isn't even a close contest most times. Add to that the fact that walruses are just now beginning to learn about global warming and haven't made plans to lower their carbon footprint and you can see how deadly this all can be."