For years, longline fishermen in Alaska have complained that whales have been stealing their sablefish catch. A team of researchers, including Aaron Thode, Delphine Mathias and Jan Straley, mounted a video camera to a fishing line and caught a sperm whale stealing. Thode, a research scientist at Scripps Institution of Oceanography, explains what the video reveals about whale behavior. Footage courtesy of Delphine Mathias, Aaron Thode, Jan Straley, Kendall Folkert. Photos from Tory O’Connell, Heather Riley. Music by Aaron Kerr and Swallows, SYNTHAR