Record number of Blue Whales Sighted Off Washington Coast

On 8 December 2011, six blue whales were sighted feeding off the Washington coast intermixed with humpback and fin whales. Blue whales are the largest animal that has ever lived and still endangered due to whaling. This is the most blue whales we know of ever being sighted off Washington and only the third confirmed sighting in the last 50 years. One of the previous sightings was also in winter (see 2009 report). The other sightings in 2009 were of single animals. Blue whales are more commonly seen off California in summer and fall. This lack of sightings off Washington could in part be because of the lack of survey effort in winter months off the Washington coast, a period where poor weather makes surveys difficult. 

The current sightings were part of a new research effort conducted by Cascadia Research in collaboration with Washington Department of Fish and Wildlife and Oregon Department of Fish and Wildlife and supported by NOAA to learn more about the occurrence of endangered whales off Washington and Oregon. This three-year effort will include surveys, photographic identification, and satellite tagging to learn more about the large whales occurring in this region.

The most recent sightings came about as a result of one of these surveys. A concentration of whales (thought to be mostly humpback and fin whales)  had been spotted in the morning of 8 December by the WDFW vessel Corliss when it surveyed through an area about 25 miles off the Westport. A smaller inflatable boat operated by Cascadia researchers Greg Schorr and John Calambokidis followed-up these sightings later that morning. They identified and photographed the whales including confirming the presence of at least six different blue whales. These will be photographically compared to Cascadia's catalog of over 2,000 identified blue whales to search for previous sightings of these individuals.

Update on 14 December 2011

All four blue whales photographed on 8 December have now been compared to Cascadia's catalog of over 2,000 identified blue whales based on their unique pigmentation patterns and dorsal fins. The four individuals ID number and their past sightings were:

We are still monitoring for a weather window to try to go back out to the area but have not been able to yet.

Photographs taken on 8 December 2011 off Washington (John Calambokidis, Cascadia Research

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