https://doi.org/10.82144/20f7148b https://seamap.env.duke.edu/dataset/45 https://www.gbif.org/dataset/5dcaa90f-0ce2-46c4-b25e-7ba792429832 https://obis.org/dataset/1a502495-ab12-4570-9ade-3579c5111ead Janet Casey Janet Casey Primary contact unknown@dummy.com Glenn Ford Glenn Ford Primary contact eci@teleport.com OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

A328 LSRC building Durham NC 27708 US

seamap-contact@duke.edu https://seamap.env.duke.edu OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

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seamap-contact@duke.edu https://seamap.env.duke.edu distributor Janet Casey Janet Casey Primary contact unknown@dummy.com owner Glenn Ford Glenn Ford Primary contact eci@teleport.com owner 2025-07-31 eng Original provider: Minerals Management Service Dataset credits: Minerals Management Service Abstract: This dataset is from the Oregon and Washington marine mammal and seabird surveys studies: Oregon/Washington aerial [mammal observations] study code: OM, Contract number: 14-12-0001-30426, Principal investigators: G. A. Green, Ebasco Environmental, Bellevue, Washington, M. L. Bonnell and K. T. Briggs, Ecological Consulting, Inc., Portland, Oregon. Time period: April 1989 through October 1990 Study area: Pacific Ocean waters of Oregon and Washington from the coast to approximately 60 nautical miles offshore. Methodology: Aerial surveys were conducted along 32 pre-established transects designed to systematically sample marine mammal and seabird abundance in all waters of the study area. Coastal surveys and one shelf break survey were also conducted. Standard transects provided systematic coverage of shelf, slope, and offshore waters in the study area. Sightings of seabirds, pinnipeds, cetaceans, and turtles were recorded. Seabird sightings were recorded only on the shaded side of the aircraft within a strip transect of 50 m width. Marine mammal and turtle sightings were recorded within an unbounded corridor. Declination angle was measured and noted for each marine mammal/turtle sightings and later used to calculate a probability density function of frequency with right-angle sighting distance. Navigation was by Loran and VLF-Omega. One ship survey was also conducted from aboard the NOAA ship Miller Freeman during August 1989. Databases produced: 1) sightings of seabirds and marine mammals on 12 aerial surveys and one ship cruise, and 2) sightings of cetaceans on 12 aerial surveys and one ship cruise. Occurrence GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml Observation GBIF Dataset Subtype Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_subtype.xml Marine Biology Visual sighting Marine Animal Survey Marine mammals Sea turtles Vessel Visual Sighting N/A This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License. https://seamap.env.duke.edu/dataset/45 Oceans,Northeastern Pacific Ocean -126.88667 -123.92333 48.39833 42.02667 1989-04-23 1990-10-03 Scientific names are based on the Integrated Taxonomic Information System (ITIS). species Balaenoptera acutorostrata Common minke whale species Balaenoptera physalus Fin whale species Berardius bairdii Baird's beaked whale species Callorhinus ursinus Northern fur seal suborder Caniformia Pinnipeds order Cetacea Cetaceans species Coryphaena hippurus Dolphinfish species Dermochelys coriacea Leatherback sea turtle species Enhydra lutris Sea otter species Eschrichtius robustus Gray whale species Eumetopias jubatus Steller sea lion species Grampus griseus Risso's dolphin genus Kogia Pygmy sperm whales species Lagenorhynchus obliquidens Pacific white-sided dolphin species Lissodelphis borealis Northern right whale dolphin species Megaptera novaeangliae Humpback whale genus Mesoplodon Beaked whales species Mirounga angustirostris Northern elephant seal species Orcinus orca Killer whale family Otariidae Eared seals species Phoca vitulina Harbor seal species Phocoena phocoena Harbor porpoise species Phocoenoides dalli Dall's porpoise species Physeter macrocephalus Sperm whale species Zalophus californianus California sea lion Objectives of the study were to review and analyze all available literature and databases concerning marine mammal and seabird diversity, distribution, and abundance in the Oregon-Washington coastal and offshore areas, to conduct field surveys over a 18-month period, and to prepare reports summarizing the findings. notPlanned Janet Casey Janet Casey Primary contact unknown@dummy.com Glenn Ford Glenn Ford Primary contact eci@teleport.com NA NA NA Janet Casey owner Glenn Ford owner NA zd_45 2025-07-31T14:02:53-04:00 dataset Ford, G. and J. Casey. 2013. MMS Marine Mammal Survey, PNW 1989-1990. Version 2.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/20f7148b. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/45 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/45/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/45/eml OBIS-SEAMAP zd_45 zd_45 Green, G. A., J. J. Breuggeman, C. E. Bowlby, R. A. Grotefendt, M. L. Bonnell, and K. T. Balcomb, III. 1991. Cetacean distribution and abundance off Oregon and Washington, 1989-1990. Final Report prepared by Ebasco Environmental, Bellevue, WA, and Ecological Consulting, Inc. , Portland, OR, for the Minerals Management Service, Pacific OCS Region. OCS Study MMS: 91-0093. 100 pp.