https://doi.org/10.82144/bc7262b3 https://seamap.env.duke.edu/dataset/332 https://www.gbif.org/dataset/90aebd4e-9353-48de-b009-fd76bce2926d https://obis.org/dataset/a8c6fd8c-4b26-4203-8ff7-8d3b7af1b499 David Hyrenbach Duke University Marine Laboratory Primary contact khyrenba@u.washington.edu http://www.nicholas.duke.edu/people/faculty/hyrenbach.html Hal Whitehead Dalhousie University Primary contact hwhitehe@dal.ca http://whitelab.biology.dal.ca 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

A328 LSRC building Durham NC 27708 US

seamap-contact@duke.edu https://seamap.env.duke.edu distributor David Hyrenbach Duke University Marine Laboratory Primary contact khyrenba@u.washington.edu http://www.nicholas.duke.edu/people/faculty/hyrenbach.html owner Hal Whitehead Dalhousie University Primary contact hwhitehe@dal.ca http://whitelab.biology.dal.ca owner 2025-07-31 eng Original provider: Dalhousie University Dataset credits: Hal Whitehead, Department of Biology, Dalhousie University Abstract: The Sargasso Sea cruise surveyed marine mammals in the Northeast Atlantic Ocean, during the spring and summer of 2005. This survey onboard the Valiant 40 ocean-going research vessel Balaena, consisted of two survey legs: a sail from the Caribbean to offshore waters north of the Bahamas (April 19 - June 2), and a sail north to Halifax, Nova Scotia. Sperm whales were surveyed using acoustics and visual techniques during both cruise legs by members of the Hal Whitehead laboratory. 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 Vessels Sightings sperm whales cetaceans Sargasso Sea N/A This dataset includes cetacean observations and survey effort. The survey track was recorded by logging a position every 10 minutes using the vessel's GPS. The cetacean observations includes sightings during surveys (on effort) and during focal follows of sperm whale schools (off effort). There are two types records for sperm whale, census and encounter. Encounters, which are defined as events where researchers observe whales by sight or acoustic techniques, are denoted 'S' (survey), 'E' (encounter), or 'AE' (acoustic encounter) in the [Enctr_type] field. These records do not have animal counts recorded, and count field for these records is null in the dataset. In addition to encounters, this dataset includes sightings during 'census' surveys, which include group size data, as well as information on the radial distance and angle to each sighting. These survey metadata are available from the primary data providers. Census records have non-zero animal counts as for other species. They are denoted C in [Enctr_type] field. Note that the [Enctr_type] field is not downloadable by the public, but may be available by request. Please request this data after obtaining permission from the primary data providers. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License. https://seamap.env.duke.edu/dataset/332 Oceans,Sargasso Sea,Nova Scotia -70.3266667 -58.9783333 43.935 16.58 2005-04-16 2005-06-23 Scientific names are based on the Integrated Taxonomic Information System (ITIS). species Balaenoptera borealis Sei whale order Cetacea Cetaceans family Delphinidae Dolphins species Delphinus delphis Short-beaked common dolphin genus Globicephala Pilot whales species Lagenorhynchus acutus Atlantic white-sided dolphin species Megaptera novaeangliae Humpback whale suborder Mysticeti Baleen whales species Peponocephala electra Melon-headed whale species Physeter macrocephalus Sperm whale species Stenella attenuata Pantropical spotted dolphin species Stenella frontalis Atlantic spotted dolphin species Tursiops truncatus Common bottlenose dolphin The purpose of this cruise was to study the behavior (principally social organization), ecology, and population biology of sperm whales. This is the second study year, after a similar cruise in the summer of 2004. notPlanned David Hyrenbach Duke University Marine Laboratory Primary contact khyrenba@u.washington.edu http://www.nicholas.duke.edu/people/faculty/hyrenbach.html Hal Whitehead Dalhousie University Primary contact hwhitehe@dal.ca http://whitelab.biology.dal.ca NA NA NA David Hyrenbach owner Hal Whitehead owner NA zd_332 2025-07-31T14:13:43-04:00 dataset Hyrenbach, D. and H. Whitehead. 2013. Sargasso 2005 - cetacean sightings. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/bc7262b3. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/332 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/332/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/332/eml OBIS-SEAMAP zd_332 zd_332