1. Alaska Department of Fish and Game, Marine Mammal Program, 1300 College Road, Fairbanks, AK 99701, USA
2. Alaska Department of Fish and Game, Marine Mammal Program, 525 West 67th Avenue, Anchorage, AK 99518, USA
3. Alaska SeaLife Center, 301 Railway Avenue, Seward, AK 99664, USA; 201 Railway Avenue, Seward, AK 99664, USA
4. University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, 2150 Koyukuk Drive, Fairbanks, AK 99775, USA
5. Alaska Department of Fish and Game, Marine Mammal Program, 1255 West 8th Street, Juneau, AK 99802, USA