1. Centre for Environment, Fisheries & Aquaculture Science (Cefas) Lowestoft Suffolk NR33 0HT UK
2. Department of Biology Syracuse University Syracuse NY 13244 USA
3. Department of Physics University of Bath Bath BA2 7AY UK
4. Natural Sounds and Night Skies Division National Park Service Fort Collins CO 80525 USA
5. Scottish Oceans Institute University of St. Andrews St. Andrews Fife KY16 8LB UK
6. Environment and Sustainability Institute University of Exeter Penryn TR10 9FE UK