Some 1500 walrus are gather on the northwest coast of Alaska. (photo: The Independent UK)
What 35,000 Walruses Forced to the Beach Tell Us About Global Warming
By Heather Saul, The Independent UK
01 October 14
In estimated 35,000 pacific walrus have been spotted ashore on a beach in north-west Alaska.
Unlike seals, the mammals cannot swim indefinitely and are now coming ashore in record numbers as they struggle to find sea ice for resting in the Artic.
They use their tusks to "haul out," or pull themselves onto an ice floe or rocks.
The National Oceanic and Atmospheric Administration (NOAA) photographed the huge gathering about five miles north of Point Lay.
Point Lay is an Inupiat Eskimo village 300 miles southwest of Barrow and 700 miles northwest of Anchorage.
The enormous herd was spotted during NOAA's annual arctic marine mammal aerial survey, said spokeswoman Julie Speegle. The survey is conducted with the Bureau of Ocean Energy Management, the agency that oversees offshore lease sales.
Pacific walrus spend winters in the Bering Sea. Females give birth on sea ice and use ice as a diving platform to reach snails, clams and worms on the shallow continental shelf.
As temperatures warm in summer, the edge of the sea ice recedes north. Females and their young ride the edge of the sea ice into the Chukchi Sea, the body of water north of the Bering Strait.
In recent years, sea ice has receded north beyond shallow continental shelf waters and into Arctic Ocean water, where depths exceed two miles and walrus cannot dive to the bottom.
Walrus in large numbers were first spotted on the US side of the Chukchi Sea in 2007. They returned in 2009, and in 2011, scientists estimated 30,000 walruses appeared along a half-mile stretch of beach near Point Lay.
The World Wildlife Fund said walrus have also been spotted gathering in large groups on the Russian side of the Chukchi Sea.
Margaret Williams, managing director of the group's Arctic program, said the phenomenon is “another remarkable sign of the dramatic environmental conditions changing as the result of sea ice loss”.
"The walruses are telling us what the polar bears have told us and what many indigenous people have told us in the high Arctic, and that is that the Arctic environment is changing extremely rapidly and it is time for the rest of the world to take notice and also to take action to address the root causes of climate change."
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