Swimming patterns of wild harbour porpoises Phocoena phocoena show detection and avoidance of gillnets at very long ranges

Nielsen, T.P.; Wahlberg, M.; Heikkilä, S.; Jensen, M.; Sabinsky, P.; Dabelsteen, T.
Marine Ecology Progress Series (2012)

Harbour porpoises Phocoena phocoena are unintentionally caught in gillnets. Although the effectiveness of by-catch mitigation measures has been evaluated many times, only a few studies have investigated the behavioural patterns…