This is the final installment in a three-part series about the decades-long search for a mysterious whale whose calls have been haunting researchers for years. Part 1 can be read here and Part 2 is available here.
Somewhere off the west coast of British Columbia wanders a whale—at least, his voice can be heard there. He appears to be alone. Simply by eavesdropping, scientists have deduced a few details about this whale.