1. School of Aquatic and Fishery Sciences University of Washington Seattle Washington USA
2. Pacific Islands Fisheries Science Center National Marine Fisheries Service Honolulu Hawaii USA
3. Marine Mammal Laboratory Alaska Fisheries Science Center, National Marine Fisheries Service Seattle Washington USA
4. U.S. Geological Survey, Washington Cooperative Fish and Wildlife Research Unit, School of Environmental and Forest Sciences & School of Aquatic and Fishery Sciences University of Washington Seattle Washington USA