1. Centre for Research in Animal Behaviour, University of Exeter, Exeter, UK
2. Center for Whale Research, Friday Harbour, WA, USA
3. Department of Biology and Department of Computer Science, University of York, York, UK
4. Center for Conservation Biology, Department of Biology, University of Washington, Seattle, WA, USA
5. IBF-CNR, Institute of Biophysics, Pisa, Italy
6. Centre for Ecology and Conservation, University of Exeter, Penryn, UK