1. School of Biological and Biomedical Sciences; Durham University; Durham DH1 3LE United Kingdom
2. Coastal Warden; Lincolnshire Wildlife Trust; Banovallum House, Manor House Street Horncastle LN9 5HF United Kingdom
3. Senior Research Scientist; Sea Mammal Research Unit; Scottish Oceans Institute; University of St Andrews; St Andrews Fife KY16 8LB United Kingdom