Since 1992, marine biologists from Woods Hole have been tracking a lone whale as it roams the Pacific ocean, singing a song unlike that of any known species and following a migratory pattern that has baffled the scientists completely.
The whale's calls identify it as a baleen whale (blue, fin and humpback whales all belong to this category) but the frequency of the calls is far too high for a blue or fin whale and far too low for a humpback. The calls have deepened with the passing years; otherwise the song has not changed. Talk about a unique voice.
Check the New Scientist for the full story.