1. Southwest Fisheries Science Center; National Marine Fisheries Service, NOAA; 8901 La Jolla Shores Drive La Jolla California 92037 U.S.A.
2. Southeast Fisheries Science Center; National Marine Fisheries Service, NOAA; 646 Cajundome Boulevard Lafayette Louisiana 70506 U.S.A.
3. National Oceanic and Atmospheric Administration; National Marine Fisheries Service; National Marine Mammal Laboratory; Alaska Fisheries Science Center; 7600 Sand Point Way NE Seattle Washington 98115 U.S.A.
4. Environnement et Sociétés; UMR 7266 CNRS - Université de La Rochelle; 2 rue Olympe de Gouges 17000 La Rochelle France
5. National Systematics Laboratory; National Marine Fisheries Service, NOAA; Smithsonian Institution; PO Box 37012 Washington, DC 20013-7012 U.S.A.
6. Conservation Genetics Laboratory; San Francisco State University; San Francisco California 94132 U.S.A.
7. Okapi Wildlife Associates; 27 Chandler Lane Hudson Quebec J0P 1H0 Canada
8. Anthropological Institute and Museum; University of Zurich; Winterhurerstrasse 190 CH-8057 Zurich Switzerland
9. Marine Mammal Institute and Department of Fisheries and Wildlife; Oregon State University; 2030 SE Marine Science Drive Newport Oregon 97365 U.S.A.