1. Department of Organismic and Evolutionary Biology, Harvard University, Cambridge MA 02138, USA.
2. Environment Department, University of York, York, YO10 5DD, UK.
3. Australian Institute of Marine Science, Private Mail Box No. 3, Townsville MC, Queensland, 4810, Australia.
4. Center for Applied Biodiversity Science, Conservation International, 1919 M Street, N.W., Suite 600, Washington, DC 20036, USA.
5. Western Australian Museum, Francis Street, Perth, WA 6000, Australia.
6. Ocean Voice International, Post Office Box 20060, Royal Post Office Perth Mews, Perth, Ontario, Canada K7H 3M6.
7. Eastern Ontario Biodiversity Museum, Box 1860, Kemptville, Ontario, Canada K0G 1J0.
8. United Nations Environment Programme–World Conservation Monitoring Centre (UNEP-WCMC), 219 Huntingdon Road, Cambridge, CB3 0DL, UK.