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Wildlife

Thousands of walruses show up early on Northwest Alaska coast as sea ice recedes

In this September 2013 photo provided by the U.S. Geological Survey, walruses rest on the shores of the Chukchi Sea near the coastal village of Point Lay, Alaska. The U.S. Fish and Wildlife Service says several thousand Pacific walruses were spotted Tuesday, July 30, 2019, near Point Lay in their earliest appearance since sea ice has substantially receded. (Ryan Kingsbery/USGS via AP,File)

Thousands of Pacific walruses have come to shore off the northwest coast of Alaska in their earliest appearance since sea ice has substantially receded.

The U.S. Fish and Wildlife Service in Anchorage received a report that several thousand walruses were gathered Tuesday on the barrier island off the Chukchi Sea village of Point Lay, spokeswoman Andrea Medeiros said.

"This is the earliest date that large numbers of walruses have been confirmed on shore at Point Lay," she said in an email response to questions, and the first time a herd has been seen as early as July.

Sea ice along northern Alaska disappeared far earlier than normal this spring as a result of exceptionally high ocean temperatures.

Since 1981, an area more than double the size of Texas — 610,000 square miles — has become unavailable to Arctic marine mammals by summer’s end, according to the National Snow and Ice Data Center.

Mature male walruses spend summers in the Bering Sea. Females and their young migrate north in spring, following the ice edge as it recedes into the Chukchi Sea.

Sea ice allows immature walruses to rest as their mothers dive over the shallow continental shelf to eat clams and snails. However, when ice recedes beyond the shelf over water more than 10,000 feet deep, walruses are forced to beaches to rest in Alaska and Russia.

Federal biologists have documented herds as large as 40,000 animals in recent years.

Young walruses are vulnerable when gathered in herds. The animals lie shoulder to shoulder. If startled by a polar bear, airplane or hunter, the herd stampedes into the safety of the ocean and young animals are crushed.

The U.S. Fish and Wildlife Service has notified the Federal Aviation Administration, the U.S. Coast Guard, and barge companies and airlines serving Point Lay that walruses are in the area, Medeiros said. The federal Marine Mammal Protection Act prohibits the "take" of walrus, which includes disturbance from human activity.

Sea ice usually melts to its summer minimum sometime in September.

The federal government in 2008 listed polar bears as a threatened species because of diminished sea ice brought on by climate warming. The Center for Biological Diversity that year petitioned to do the same for walruses.

However, the U.S. Fish and Wildlife Service concluded in October 2017 that walruses are adapting and no one has proven that they need sea ice for birthing, nursing and feeding.

The Center for Biological Diversity sued to reverse that decision and the lawsuit is pending before a U.S. District Court judge in Anchorage.

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