1. Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
2. Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
3. Marine Mammal and Turtle Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, La Jolla, California, USA
4. SR3 SeaLife Response, Rehabilitation, and Research, Mukilteo, Washington, USA
5. Coastal Ocean Research Institute, Vancouver Aquarium, Vancouver, BC, Canada
6. Zoology Department, University of British Columbia, Vancouver, BC, Canada