Cascadia Research Blue Whale Photo IDs for US West Coast, 1972-2004

Occurrence Observation
Latest version published by OBIS-SEAMAP on Oct 7, 2025 OBIS-SEAMAP

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 6,530 records in English (504 KB) - Update frequency: not planned
Metadata as an EML file download in English (13 KB)
Metadata as an RTF file download in English (11 KB)

Description

Original provider: Cascadia Research Collective Dataset credits: Cascadia Research Abstract: This dataset consists of 6,560 sighting records, including at least 1,803 uniquely identified blue whales. These were collected by Cascadia Research and collaborators from the eastern North Pacific from 1975 through 2004 (data collection is continuing). The primary extent of this dataset includes waters off California, Oregon, and Washington from 1986 to 2004, which accounts for over 6,000 of the records. Additional sighting records are from other regions of the North Pacific including the Eastern Tropical Pacific, British Columbia, and Alaska. These data represent the most extensive database of blue whale sightings available from the waters off the western United States and have provided the primary information available on movements and abundance of eastern North Pacific blue whales. Effort was not evenly distributed throughout the region so sighting locations are biased towards areas of highest effort. ID field links resightings of the same individual.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 6,530 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Calambokidis, J. 2013. Cascadia Research Blue Whale Photo IDs for US West Coast, 1972-2004. Version 1.7.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/0cbd04d0.

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is OBIS-SEAMAP. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: f30db7c2-5f7b-449d-a508-34b701e95c43.  OBIS-SEAMAP publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biodiversity Information System.

Keywords

Occurrence; Observation; Marine Biology; Visual sighting; Vessels; Sightings; Occurrence

External data

The resource data is also available in other formats

OBIS-SEAMAP Dataset Page https://seamap.env.duke.edu/dataset/99 UTF-8 Interactive map
FGDC Metadata https://seamap.env.duke.edu/dataset/99/fgdc UTF-8 XML
EML Metadata https://seamap.env.duke.edu/dataset/99/eml UTF-8 XML

Contacts

John Calambokidis
  • Owner ●
  • Originator ●
  • Point Of Contact
  • Primary contact
OBIS-SEAMAP
  • Metadata Provider ●
  • Distributor
Marine Geospatial Ecology Lab, Duke University
  • A328 LSRC building
27708 Durham
NC
US

Geographic Coverage

Western Pacific sector

Bounding Coordinates South West [-14.43, 168.94], North East [59.28, 180]

Taxonomic Coverage

Scientific names are based on the Integrated Taxonomic Information System (ITIS).

Species Balaenoptera musculus (Blue whale)

Temporal Coverage

Start Date / End Date 1975-12-01 / 2004-11-02

Project Data

No Description available

Title Cascadia Research Blue Whale Photo IDs for US West Coast, 1972-2004
Funding NA

The personnel involved in the project:

John Calambokidis
  • Owner

Sampling Methods

NA

Study Extent NA

Method step description:

  1. NA

Collection Data

Collection Name zd_99
Collection Identifier zd_99
Parent Collection Identifier OBIS-SEAMAP

Bibliographic Citations

  1. Calambokidis, J. and J. Barlow. 2004. Abundance of blue and humpback whales in the eastern North Pacific estimated by capture-recapture and line-transect methods. Marine Mammal Science20(1):63-85. http://www.cascadiaresearch.org/reports/MMS-MnBm-04.pdf

Additional Metadata

marine, harvested by iOBIS. Updated on March 30, 2006, expanding the dataset up to 2004.