Caught in a net (IMAGE) Aarhus University Caption A dead harbour porpoise on the beach in Denmark. Part of the net that it got entangled in is still visible. It's estimated that 900 harbour porpoises die every year as by-catch in the fishing industry. Credit Line Kyhn, Aarhus University Usage Restrictions May only be used in communicating this story. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.