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Cetacean visual observations using line-transect survey methods onboard the NOAA Ship Gordon Gunter (GU) in the Gulf of America, for the Vessel Surveys for Abundance and Distribution of Marine Mammals and Seabirds project (VSAD survey GU2303) from 2023-06-22 to 2023-08-14 (NCEI Accession 0290373)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: October 04, 2025 | Last Modified: 2025-06-02T00:00:00.000+00:00

As part of the Vessel Surveys for Abundance and Distribution of Marine Mammals and Seabirds (VSAD) project, the Southeast Fisheries Science Center (SEFSC) conducted a shipboard survey of the U.S. oceanic waters of the Gulf of America out to the Exclusive Economic Zone (EEZ) from 2023-06-22 to 2023-08-14. The survey was designed for a two-team independent visual observer approach with distance sampling to estimate the detection probabilities for marine mammal sightings. A sighting constituted a single or group of marine mammals (whales and dolphins) seen at the same location and time. This dataset includes marine mammal visual observation data and effort points with surveying conditions that can be used in abundance and density modeling per visual line-transect survey protocols. This dataset also includes opportunistic marine mammal photographs and biopsy samples, and non-marine mammal sightings (a.k.a. occurrences) such as sea turtles.

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0290373 biological data Biopsy BIRDS cetacean dolphins MARINE MAMMALS MARINE SPECIES INVENTORY sea turtles species abundance SPECIES IDENTIFICATION BIG EYE BINOCULARS dart biopsy gun Distance Sampling line transect sampling photograph video camera visual estimate visual observation biological in situ marine mammal observation survey - biological visual estimate visual observation NOAA Ship Gordon Gunter SEFSC - Miami Lab SEFSC - Pascagoula/Stennis Lab SEFSC - Miami Lab Gulf of America Gulf of Mexico oceanography DOC/NOAA/NMFS/SEFSC > Southeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce University of Miami’s Cooperative Institute for Marine and Atmospheric Studies (CIMAS) Vessel Surveys for Abundance and Distribution of Marine Mammals and Seabirds (VSAD) EARTH SCIENCE > BIOLOGICAL CLASSIFICATION EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MARINE MAMMALS EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MARINE MAMMALS > DOLPHINS EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > REPTILES > TURTLES > SEA TURTLES Gulf of America Gulf of Mexico visual observation Atlantic spotted dolphin Beaked whales Beaked whales of the genus Mesoplodon Blainville's beaked whale Cetacean (large) Clymene dolphin Common bottlenose dolphin Common bottlenose or Atlantic spotted dolphin Cuvier's beaked whale Delphinidae Dolphins of the genus Stenella False killer whale Fraser's dolphin Gervais' beaked whale Melon-headed or Pygmy killer or False killer whale Melon-headed or Pygmy killer whale Pantropical spotted dolphin Pilot whales Pygmy or Dwarf sperm whale Pygmy sperm whale Rice's whale Risso's dolphin Rough-toothed dolphin Sei or Fin or Bryde’s or Rice's whale Sperm whale Spinner dolphin Spinner or Clymene dolphin Striped dolphin Toothed whales Balaenoptera borealis or Balaenoptera physalus or Balaenoptera edeni or Balaenoptera ricei Balaenoptera ricei Caretta caretta Cetacea Cheloniidae Delphinidae Dermochelys coriacea Globicephala Grampus griseus Istiophoridae Kogia Kogia breviceps Lagenodelphis hosei Mesoplodon Mesoplodon densirostris Mesoplodon europaeus Odontoceti Peponocephala electra or Feresa attenuata Peponocephala electra or Feresa attenuata or Pseudorca crassidens Physeter macrocephalus Pseudorca crassidens Selachii Stenella Stenella attenuata Stenella clymene Stenella coeruleoalba Stenella frontalis Stenella longirostris Stenella longirostris | Stenella clymene Steno bredanensis Tursiops truncatus Tursiops truncatus or Stenella frontalis Ziphiidae Ziphius cavirostris BIG EYE BINOCULARS Dart Biopsy Gun Distance Sampling Line Transect Sampling VIDEO CAMERA > VIDEO CAMERA VISUAL OBSERVATIONS > VISUAL OBSERVATIONS Ships Ships GORDON GUNTER (call sign: WTEO, ICES code: 33GG, 1998-) OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO 4HBF4F

Complete Metadata

describedByType	application/octet-steam
identifier	gov.noaa.nodc:0290373
issued	2024-04-27T00:00:00.000+00:00
landingPage	https://www.ncei.noaa.gov/contact
language	[]
references	[ "https://doi.org/10.25923/mg6n-y956", "https://doi.org/10.25921/1yem-b389", "https://www.ncei.noaa.gov/archive/accession/0281793", "https://www.ncei.noaa.gov/archive/accession/0282737" ]
rights	otherRestrictions
spatial	-83.46609,24.13521,-96.48881,29.97844
temporal	2023-06-22T00:00:00+00:00/2023-08-14T00:00:00+00:00

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