Document Information Documents Project Report: Enhanced detection of harbour porpoises prior to ramming, seismic blasts and ammunition clearance: design and construction of a PAL-porpoise detector (PPD) AC21/Inf.6.1.a ASCOBANS Aug 07, 2014 Threats: Noise pollution Public files AC21_Inf_6.1.a_ProjectReport_EnhancedDetection_F3.pdf 783.83 KB Aug 07, 2014 Related content Meetings 2 4th Meeting of the North Sea Group 28 Sep 2014 Gothenburg Sweden Hotel Riverton 21st Meeting of the Advisory Committee 29 Sep - 01 Oct 2014 Gothenburg Sweden Hotel Riverton Species Harbour Porpoise Harbour Porpoise