1. Pacific Coastal and Marine Science Center, US Geological Survey, 2885 Mission Street, Santa Cruz, CA 95060, USA
2. Woods Hole Coastal and Marine Science Center, US Geological Survey, 384 Woods Hole Road, Woods Hole, MA 02543, USA
3. Moss Landing Marine Laboratories, San Jose State University, 8272 Moss Landing Road, Moss Landing, CA 95039-0450, USA
4. Geological Survey of Canada–Pacific, Natural Resources Canada, PO Box 6000, Sidney, BC V8L 4B2, Canada
5. Alaska Science Center, US Geological Survey, 4210 University Drive, Anchorage, AK 99508, USA