Article Fisheries Research 250 (2022) 106278 Available online 18 February 2022 0165-7836/© 2022 Elsevier B.V. All rights reserved.Angle-dependent acoustic reflectivity of gillnets and their modifications to reduce bycatch of odontocetes using sonar imaging Study Type Study in the lab Bycatch species Small Cetaceans (maximum length < 7.5 meters) Fishing Gear Gillnets Reduction technique Acoustic deterrent devices