1. Global Fishing Watch, Washington, DC 20036, USA.
2. University of California, Santa Barbara, CA 93106, USA.
3. Pristine Seas, National Geographic Society, Washington, DC 20036, USA.
4. SkyTruth, Shepherdstown, WV 25443, USA.
5. Biology Department, Dalhousie University, Halifax, NS B3H 4R2, Canada.
6. Biology Department, Stanford University, Stanford, CA 94305, USA.
7. Google, Mountain View, CA 94043, USA.