1. Centre for Ecology & Conservation, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK
2. Global Fishing Watch, Washington, DC 20036, USA
3. Marine Stewardship Council, 1 Snow Hill, London EC1A 2DH, UK
4. The Lyell Centre, Heriot-Watt University, Edinburgh EH14 4AS, UK
5. British Antarctic Survey, Natural Environment Research Council, Cambridge CB3 0ET, UK