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https://cmst.curtin.edu.au/wp-content/uploads/sites/4/2016/05/erbe_2012_acoustic_characterisation_of_bycatch.pdf
ENDANGERED SPECIES RESEARCHEndang Species Res. Vol. 19: 109–121, 2012doi: 10.3354/esr00467. Published online December 13. INTRODUCTION. Pingers, or acoustic alarms, were developed toreduce bycatch of marine mammals in fishing gear(Reeves et al.