The U.S. Fish and Wildlife Service announced that it issued twenty-three letters of authorization authorizing the nonlethal take of walruses, polar bears, and sea otters in Alaska incidental to oil and gas exploration activities conducted by the following companies in 2021: Conoco Phillips, Exxon Mobil, Hilcorp, Glacier Oil and Gas, Eni US, Oil Search Alaska, Alyeska Pipeline Service Company, and SA Exploration.