The U.S. Fish and Wildlife Service proposes to issue a one-year Incidental Harassment Authorization (IHA) under the Marine Mammal Protection Act to Narwhal LLC for shallow hazard surveys, preliminary field surveys, exploratory drilling operations, and summer cleanup activities in West Harrison Bay, Alaska, from August 1, 2025, through July 31, 2026. The proposed IHA authorizes up to 13 Level B harassment takes of Southern Beaufort Sea polar bears and 15 takes of Pacific walruses, all nonlethal. No Level A harassment or lethal take is anticipated or authorized. FWS has prepared a draft Environmental Assessment and preliminarily concluded no significant impact on the human environment, making an EIS unnecessary. Public comments are due by August 18, 2025.12