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Incidental Take Authorization: U.S. Navy Training Activities in the Gulf of Alaska Study Area


Marine Mammal Protection Act
Action Status
Final Rule
Affected Species
Blue Whale
Fin Whale
Humpback Whale
Minke Whale
North Pacific Right Whale
Sei Whale
Gray Whale
Killer Whale
Pacific White-Sided Dolphin
Dall’s Porpoise
Sperm Whale
Baird’s Beaked Whale
Cuvier's Beaked Whale
Stejneger's Beaked Whale
Northern Fur Seal
Northern Elephant Seal


2023 Letter of Authorization

NOAA Fisheries has issued a Letter of Authorization (LOA) to the U.S. Navy for the take of marine mammals incidental to military readiness activities conducted in the Gulf of Alaska Study Area.

2023 Final Rule

NOAA Fisheries, upon request from the U.S. Navy, issued regulations to govern the taking of marine mammals incidental to the training activities conducted in the Gulf of Alaska Study Area. The Navy’s activities qualify as military readiness activities under the Marine Mammal Protection Act, as amended by the National Defense Authorization Act for Fiscal Year 2004. These regulations, which allow for the issuance of Letters of Authorization for the incidental take of marine mammals during the described activities and timeframes, prescribe the permissible methods of taking and other means of effecting the least practicable adverse impact on marine mammal species and their habitat, and establish requirements for monitoring and reporting of such taking.

GOA Study Area

Last updated by Office of Protected Resources on 02/15/2023