In February and March National Geographic will be featuring some of the work on blue whales by Cascadia Research. This included the following (with links to additional information from the National Geographic website:

Mother and calf blue whale on the Costa Rica Dome, January 2008. Photo by John Calambokidis
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Adopt or name a blue whale through a joint program by Oceanic Society and Cascadia Research

Tagging a blue whale in the Santa Barbara Channel. Photo by Alexei Calambokidis
In January 2008, Cascadia conducted an expedition to the Costa Rica Dome on collaboration with Oregon State University, Scripps Institution of Oceanography, and National Geographic. (read cruise report from expedition) The month-long expedition had a number of objectives that would be addressed using several techniques:
Determine presence of blue whale calves and mating activities on the Costa Rica Dome
Examine occurrence of feeding by blue whales on the Costa Rica Dome
Examine movements and habitat use of blue whales using satellite tags, including relocation to determine tag status, biopsy, and possible association with calves
Examine underwater behavior using suction-cup data-logging acoustic tags and underwater filming
Obtain identification photographs of blue whales to examine population structure and movements
Determine vocalizations of blue whales on a breeding ground
Obtain samples for genetic determination of population structure
Examine the oceanographic and prey occurrence on the Dome and relationship to blue whale occurrence