1. The UWA Oceans Institute, School of Environmental Systems Engineering, University of Western Australia, Crawley, Western Australia, Australia
2. Australian Institute of Marine Science, Crawley, Western Australia, Australia
3. Centre for Marine Futures, Oceans Institute, University of Western Australia, Crawley, Western Australia, Australia
4. Marine Conservation Society Seychelles, Victoria, Mahe, Seychelles
5. Marine Megafauna Foundation, Truckee, CA 96161, USA
6. MRAG Ltd, 18 Queen Street, London W1 J 5PN, UK