1. U.S. Geological Survey, Long Marine LabWestern Ecological Research Center115 McAllister Way Santa Cruz CA 95060 USA
2. NOAA FisheriesProtected Resources Division222 West 7th Ave, Rm 552 Anchorage AK 99513 USA
3. U.S. Geological SurveyAlaska Science Center4210 University Drive Anchorage AK 99508 USA
4. Center for Stock Assessment Research and Department of Applied Mathematics and StatisticsUniversity of California Santa Cruz110 McAllister Road Santa Cruz CA 95060 USA
5. Institute of Marine Sciences and Department of Applied MathematicsUniversity of California Santa Cruz CA 95064 USA
6. Department of Biological SciencesUniversity of Bergen9020 Bergen Norway
7. College of Fisheries and Ocean SciencesUniversity of Alaska Fairbanks17101 Point Lena Loop Rd Juneau AK 99801 USA
8. U.S. Fish and Wildlife ServiceMarine Mammals Management3000 Vintage Blvd., Suite 201 Juneau AK 99801 USA