1. Polar Science Center, Applied Physics Laboratory, 1013 NE 40 Street; University of Washington; Seattle WA 98105 U.S.A.
2. Greenland Institute of Natural Resources; P.O. Box 570 3900 Nuuk Greenland
3. Norwegian Polar Institute; Fram Centre; N-9296 Tromsø Norway
4. School of Fisheries and Ocean Sciences; University of Alaska; 73-4388 Paiaha Street, Kailua Kona HI 96740 U.S.A.
5. National Marine Fisheries Service; National Oceanographic and Atmospheric Administration; 7600 Sand Point Way NE Seattle WA 98115 U.S.A.
6. U.S. Fish and Wildlife Service; 1011 East Tudor Road; Anchorage AK 99503 U.S.A.
7. Fisheries and Oceans Canada, Freshwater Institute; 501 University Crescent; Winnipeg MB R3T 2N6 Canada
8. Natural History Museum; University of Oslo; P.O. Box 1172 Blindern N-0318 Oslo Norway
9. National Marine Mammal Laboratory, Alaska Fisheries Science Center; National Oceanic and Atmospheric Administration; 7600 Sand Point Way NE Seattle WA 98115 U.S.A.
10. ChukotTINRO; P.O. Box 29, Str. Otke, 56 Anadyr, Chukotka 689000 Russia
11. Alaska Department of Fish and Game; 1300 College Road; Fairbanks AK 99701 U.S.A.