1. Comisión Nacional para el Conocimiento y Uso de la Biodiversidad, CICESE Camper 10, Carretera Ensenada-Tijuana 3918, Zona Playitas, Ensenada, Baja California 22860, Mexico
2. Centre for Research into Ecological and Environmental Modelling, The Observatory, Buchanan Gardens, University of St Andrews, St Andrews, Fife KY16 9LZ, UK
3. Alaska Fisheries Science Center, NOAA Fisheries, Marine Mammal Laboratory, Seattle, WA 98115, USA
4. Southwest Fisheries Science Center, NOAA Fisheries, Marine Mammal and Turtle Division, 8901 La Jolla Shores Drive, La Jolla, CA 92037, USA
5. Chelonia Limited, The Barkhouse, Mousehole TR196PH, UK