1. U.S. Geological Survey, Western Ecological Research Center, Sacramento, CA 95826, USA
2. Monterey Bay Aquarium, Monterey, CA 93940, USA
3. Vancouver Aquarium, Vancouver, BC V6G 3E2, Canada
4. Oregon Coast Museum, Newport, OR 97365, USA
5. Shedd Aquarium, Chicago, IL 60605, USA
6. Aquarium of the Pacific, Long Beach, CA 90802, USA
7. U.S. Geological Survey, Alaska Science Center, Anchorage, AK 99508, USA
8. University of California, Santa Cruz, CA 95064, USA
9. University of California, Davis, CA 95616, USA