A special session on *Passive Acoustic Density Estimation*: Recent Advances and Outcomes for Terrestrial and Marine Species “ is being held during the upcoming 176th Meeting of the Acoustical Society of America (ASA) on 5-9 November 2018 to be held in the beautiful city of Victoria, British Columbia Canada. *Abstracts are due next Tuesday, the 29th of May*. *In the past, similar sessions at ASA have included marine mammal biologists and bioacoustic researchers presenting their work on related to science and conservation of marine mammals. We are encouraging researchers working on a wide range of taxonomic study subjects, including marine mammals, to present talks at this special session.* You can submit an abstract via this link: https://asa2018fall.abstractcentral.com/ Please indicate the “Animal Bioacoustics Technical Committee” in the pull-down menu on the abstracts submission page and also which session you wish to present your talk in. Choose the following PACS (classification number) *43.80.*Ka : Sound production by animals: mechanisms, characteristics, populations, biosonar Please note that poster sessions are not expected to be held for this session, so only submit an abstract if you are willing to give a talk. For more details on the meeting including travel, accommodation and registration fees, please follow the link below: https://acousticalsociety.org/176th-meeting-acoustical-society-of-america/ I look forward to seeing (and hearing) many interesting talks If you have questions about the session, please don’t hesitate to contact me. Tom Norris thomas.f.norris@bio-waves.com <Thomas.f.norris@bio-waves.com> (ASA Animal Bioacoustics Technical Committee & Session Co-chair) and Tiago Marques (Session Co-Chair) University of St. Andrews Tom Norris Chief Scientist Bio-Waves inc. www.bio-waves.net