Cascadia Research studies on gray whales

This is a long terms study Cascadia began in the 1980s and since 1998 has coordinated a collaborative photo-ID effort along the US West Coast tracking identified gray whales. Almost 1,000 different individuals are tracked by their natural markings as a part of this research and used to estimate abundance, trends, and movements of primarily the animals that summer and feed in the Pacific Northwest but also some of those that migrate through these waters on route to other feeding areas. 

Original publication on western gray whale photo-ID matches: A publication that just came out in Endangered Species Research coauthored by Cascadia researchers Amber Klimek and John Calambokidis reports on movements of gray whales between what was thought to be a feeding area for a separate population of western Pacific gray whales off Russia and feeding and breeding areas in the eastern North Pacific. This surprising result along with satellite tag data from a coalition of US and Russian researchers is changing our view of the status of gray whales in the western North Pacific.

Cascadia finds photo-ID match to satellite tagged western gray whale (February 2011)

Field Identification Guide to Northern Puget Sound gray whales (2 MB PDF file)

Educational program on gray whale (developed in collaboration with Larry Wade)

Information on gray whale sightings and strandings in Puget Sound

Downloadable reports and publications on Gray whales

Identification photographs of Northern Puget Sound gray whales taken on 24 March 2003 (John & Alexei Calambokidis)

Individuals: 22-Spyhopper (left & right sides), 44-Dubnuk (left & right sides), 49-Patch (left & right sides), 53 ,(left & right sides) and  56 (left & right sides)

Gray Whales of Washington State online in PDF Format. Adobe Acrobat Reader 3.0 (or higher) needed to view this document. 
Available to download for free at:

Gray whale rescue information

Gray whale disentanglement and photos in N Puget Sound - 18 May 2003

Rescue in Hood Canal - 21 November 1994


Adopt A Whale Program

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