Dear colleagues, does anyone know of any published information on how far away distant trawlers (or other fishing boats) can be detected acoustically or visually by cetaceans? If so, could you please share it with me? I am familiar with information reported by Norris and Prescott 1961 and Bonizzoni et al. 2022 for bottlenose dolphins and trawlers, by Jefferson 2000 for Indo-Pacific humpback dolphins and trawlers, and by Thode at al. 2007 for sperm whales and longliners. However, I suspect there is additional information out there. Thank you for any help you may provide! Giovanni Bearzi <giovanni.bearzi@gmail.com> http://www.dolphinbiology.org/people/giovanni_bearzi.htm --- REFERENCES Bonizzoni S, Hamilton S, Reeves RR, Genov T, Bearzi G (2022) Odontocete cetaceans foraging behind trawlers, worldwide. Rev Fish Biol Fisheries 32:827-877 Jefferson TA (2000) Population biology of the Indo-Pacific hump-backed dolphin in Hong Kong waters. Wildlife Monogr 144:1-65 Norris KS, Prescott JH (1961) Observations on Pacific cetaceans of Californian and Mexican waters. Univ Calif Publ Zool 63:291-402 Thode A, Straley J, Tiemann CO, Folkert K, O'Connell V (2007) Observations of potential acoustic cues that attract sperm whales to longline fishing in the Gulf of Alaska. J Acoust Soc Am 122:1265-1277