Veterinary scientist Mark Evans and comparative anatomist Joy Reidenberg dissect a sperm whale's enormous organs to reveal the secrets of this 45-foot deep-sea giant, which stranded and died on Pegwell Bay, Kent, England. As the team ventures inside the whale, biologist Simon Watt tracks whales in the Azores with a modern-day Jonah, Malcolm Clarke, who shows him the huge number of squid beaks in a whale's stomach. Evolutionary biologist Richard Dawkins, marveling at the gigantic teeth that have evolved in the lower jaw of a sperm whale, digs out his copy of the King James Bible for a reading about Leviathan from the Book of Job.