1. Sea Mammal Research Unit University of St Andrews St Andrews UK
2. Department of Ecology and Evolutionary Biology University of California Santa Cruz Santa Cruz California USA
3. CNRS Centre of Biology Studies of Chizé Villiers‐en‐Bois France
4. Institute of Marine Research Tromsø Norway
5. Department of Ocean Sciences University of California Santa Cruz Santa Cruz California USA
6. Institute of Marine Sciences, University of California Santa Cruz Santa Cruz California USA
7. Department of Biology Sonoma State University Rohnert Park California USA