John Hildebrand appears in the following:
Sing Out: Blue Whales Singing a Different Tune
Thursday, February 11, 2010
Off the coast of California, blue whales are singing about half an octave lower than they were a generation ago. One theory suggests the change is due to efforts to preserve the animal. We talk with John Hildebrand of the Scripps Institution of Oceanography in the latest installment of Sing ...