1. Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway
2. Akvaplan-niva, Fram Centre, 9296 Tromsø, Norway
3. Norwegian Institute for Nature Research, Fram Centre, 9296 Tromsø, Norway
4. Norwegian Institute for Nature Research, 7485 Trondheim, Norway
5. Karmøy Ringmerkingsgruppe, 4280 Skudeneshavn, Norway
6. Centre d’Etudes Biologiques de Chizé, UMR7372, CNRS-Université La Rochelle, 79360 Villiers en Bois, France
7. Faroe Marine Research Institute, 100 Tórshavn, Faroe Islands
8. UK Centre for Ecology & Hydrology, Penicuik, EH26 0QB, UK
9. Norwegian Environment Agency, 7485 Trondheim, Norway
10. Murmansk Marine Biological Institute, 183010 Murmansk, Russia
11. National Park Russian Arctic, 163069 Archangelsk, Russia
12. Association Maritime Heritage, 199106 Saint Petersburg, Russia
13. Arctic and Antarctic Research Institute, 198397 Saint Petersburg, Russia
14. Faculty of Life and Environmental Sciences, University of Iceland, 102 Reykjavik, Iceland
15. South Iceland Nature Research Centre, 900 Vestmannaeyjar, Iceland
16. Østfold University College, 1757 Halden, Norway
17. East Iceland Nature Research Centre, 740 Neskaupstaður, Iceland
18. University of Iceland’s Research Centre at Snæfellsnes, 340 Stykkishólmur, Iceland
19. Northeast Iceland Nature Research Centre, 640 Húsavík, Iceland
20. Lipetsk State Pedagogical University, 398020 Lipetsk, Russia
21. Norwegian Institute for Nature Research, 5006 Bergen, Norway
22. Lighthouse Field Station, School of Biological Sciences, University of Aberdeen, IV11 8YL, UK
23. Kandalaksha State Nature Reserve, 184042 Kandalaksha, Russia
24. University of Gdansk, 80-309 Gdansk, Poland