https://doi.org/10.82144/fc36f318 https://seamap.env.duke.edu/dataset/2158 https://www.gbif.org/dataset/dc274911-6d14-4aa7-9c27-d17833d51a5d https://obis.org/dataset/dbf24318-379f-4f37-8ce7-2b292ed35125 Hannah Myers University of Alaska Fairbanks Primary contact hmyers8@alaska.edu https://uaf.edu/cfos/people/student/detail/hannah-myers.php OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

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seamap-contact@duke.edu https://seamap.env.duke.edu distributor Hannah Myers University of Alaska Fairbanks Primary contact hmyers8@alaska.edu https://uaf.edu/cfos/people/student/detail/hannah-myers.php owner 2025-07-31 eng Original provider: Hannah Myers Dataset credits: Hannah Myers, University of Alaska Fairbanks Abstract: Killer whales (Orcinus orca) are top predators throughout the world’s oceans. In the North Pacific, the species is divided into three ecotypes—resident (fish-eating), transient (mammal-eating), and offshore (largely shark-eating)—that are genetically and acoustically distinct and have unique roles in the marine ecosystem. We deployed hydrophones in the northern Gulf of Alaska to examine the year-round distribution of killer whales from 2016 to 2020 using passive acoustic monitoring. Highest year-round acoustic presence occurred in Montague Strait, with strong seasonal patterns in Hinchinbrook Entrance and Resurrection Bay. Passive acoustic monitoring revealed that both resident and transient killer whales used these areas much more extensively than previously known and provided novel insights into high use locations and times for each population. These results may be driven by seasonal foraging opportunities and social factors, and have management implications for this species. Marine Biology Passive acoustic detection Marine Animal Survey Marine mammals Acoustic precense/absence Ocean-based Platforms N/A This dataset presents killer whale presence or absence based on acoustic detection. The locations of the stationary acoustic devices are approximate. Passive acoustic monitoring efforts were done during the following periods: Montague Strait Hanning Bay 10/1/2016 - 1/31/2017 Little Bay 9/14/2017- 5/7/2018 Little Bay 5/15/2018 - 9/17/2018 Little Bay 10/1/2018 - 9/24/2019 Little Bay 09/27/2019 - 5/31/2020 Hinchinbrook Entrance Port Etches 10/1/2016 - 6/16/2017 Port Etches 9/7/2017 - 5/12/2018 Port Etches 5/15/2018 - 9/30/2018 Zaikof Bay 10/1/2018 - 7/25/2019 Zaikof Bay 10/1/2019 - 5/29/2020 Resurrection Bay 6/7/2018 - 10/2/2018 10/2/2018 - 5/27/2019 5/27/2019 - 9/22/2019 9/22/2019 - 5/31/2020 This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License. https://seamap.env.duke.edu/dataset/2158 Oceans,Alaska -149.6 -147 60.3 59.7 2016-10-01 2020-05-31 Scientific names are based on the Integrated Taxonomic Information System (ITIS). species Orcinus orca Killer whale Year-round passive acoustic monitoring of killer whales notPlanned Hannah Myers University of Alaska Fairbanks Primary contact hmyers8@alaska.edu https://uaf.edu/cfos/people/student/detail/hannah-myers.php NA NA NA Hannah Myers owner NA zd_2158 2025-07-31T17:37:55-04:00 dataset Myers, H. 2021. Passive acoustic monitoring of killer whales in the northern Gulf of Alaska. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/fc36f318. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/2158 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/2158/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/2158/eml OBIS-SEAMAP zd_2158 zd_2158 Myers, H.J., Olsen, D.W., Matkin, C.O., Horstmann, L.A., Konar, B. 2021. Passive acoustic monitoring of killer whales (Orcinus orca) reveals year-round distribution and residency patterns in the Gulf of Alaska. Scientific Reports: 20284.