1. Centre for Research into Ecological and Environmental Modelling University of St Andrews The Observatory, Buchanan Gardens Fife KY16 9LZ UK
2. Centro de Estatística e Aplicações da Universidade de Lisboa Bloco C6, Piso 4 1749‐016 Lisboa Portugal
3. Space and Naval Warfare Systems Center Pacific 53560 Hull Street San Diego CA 92152 USA
4. Cooperative Institute for Marine Resources Studies Oregon State University and NOAA Pacific Marine Environmental Laboratory 2030 SE Marine Science Drive Newport OR 97365 USA
5. Naval Undersea Warfare Center 1176 Howell Street Newport RI 02841 USA
6. Sea Mammal Research Unit Scottish Oceans Institute, University of St. Andrews Fife KY16 8LB UK