Chelsea's hydrophone arrays used to study the reactions of fish to sound "Chelsea's hydrophone arrays are being used by the Norwegian University of Science and Technology (NTNU) to study the reactions of fish to sound", reports Chelsea’s acoustics specialist Paul Bolton. “Three custom designed, 8m long, active hydrophone arrays are now being used to map the sound field inside a fish pen at Austevoll, just south of Bergen. The reactions of a school of herring (ca. 10000 fish) to waterborne acoustic signals and noise of various types is currently being studied to get a better understanding of the environmental impact human-made noise can have on fish." Full release: http://www.chelsea.co.uk/marineapps/acoustic-monitoring-of-fish For more information, please contact Ellen Keegan, Communications Manager, Chelsea Technologies Group, ekeegan@chelsea.co.uk Tel +44 (0)20 8481 9019.