1. National Research Council Postdoctoral Fellow for Marine Mammal and Turtle Division Southwest Fisheries Science Center National Marine Fisheries Service National Oceanic and Atmospheric Administration La Jolla California 92037 USA
2. Marine Mammal and Turtle Division Southwest Fisheries Science Center National Marine Fisheries Service National Oceanic and Atmospheric Administration La Jolla California 92037 USA
3. Southall Environmental Associates Aptos California USA
4. SR3, SeaLife Response, Rehabilitation and Research Des Moines Washington USA
5. Ocean Wise Conservation Association Vancouver British Columbia Canada
6. Ocean Associates Arlington Virginia USA
7. Conservation Biology Division Northwest Fisheries Science Center National Marine Fisheries Service National Oceanic and Atmospheric Administration Seattle Washington 98112 USA
8. Washington Department of Fish and Wildlife Olympia Washington USA