Bering

As well as warmer seas, some storms also disrupted ice around the Barents and Bering Seas, with the consequences likely amplified by long-term reductions in sea-ice thickness.

The Cessna Grand Caravan aircraft, operated by regional operator Bering Air, was travelling from Unalakleet to Nome on Thursday when it lost radar contact.

The two cities are some 146 miles from each other across the Norton Sound, an inlet of the Bering Sea on Alaska's western coast.

Last week, Biden took action to protect the East and West coasts and Alaska’s Northern Bering Sea from offshore oil and natural gas drilling.

The ban announced by Biden covers the entire Atlantic coast and eastern Gulf of Mexico, as well as the Pacific coast off California, Oregon and Washington, and a section of the Bering Sea off Alaska.