1. Coastal Oregon Marine Experiment Station, Oregon State University , Newport, OR 97365 , USA
2. Department of Fisheries, Wildlife and Conservation Sciences, Oregon State University , Corvallis, OR 97331 , USA
3. Department of Integrative Biology, Oregon State University , Corvallis, OR 97333 , USA
4. Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara , Santa Barbara, CA 93106 , USA
5. Department of Wildlife, Fish and Conservation Biology, University of California, Davis , Davis, CA 95616 , USA
6. Department of Earth and Planetary Science, University of California, Davis , Davis, CA 95616 , USA
7. Marine Mammal Institute, Oregon State University , Newport, OR 97365 , USA
8. Department of Ecology and Zoology, Universidade Federal de Santa Catarina , Florianopolis, SC 88040-900 , Brazil
9. Center for Marine Studies, Universidade Federal do Paraná , Pontal do Paraná, PR 83255-000 , Brazil