Clark can move a cursor around a screen and listen in on different areas of the North Atlantic. If he hears a whale singing, he can fix its location and position it in space and time and observe animals that are many tens of miles apart – cohorts of humpback singers moving coherently – and watch the collective migration of species in large portions of the ocean basin. “So if I am a whale off Newfoundland, I can hear a whale off Bermuda,” says Clark.
Acoustic experts at the Cornell Lab of Ornithology’s Bioacoustics Research Program (BRP) and the New York State Department of Environmental Conservation (DEC) confirmed that the voice of a singing blue whale was tracked about 70 miles off of Long Island and New York City on Jan. 10-11, 2009, as the whale swam slowly from east to west. At the same time, a second blue whale was heard singing offshore in the far distance.