Killer Shark Vs. Killer Whale - Ep. 1

Killer Shark vs. Killer Whale examined an extraordinary incident that occurred at the Farallon Islands, 27 miles off San Francisco, in October 1997. Two killer whales attacked and drowned a great white shark and ripped out its liver. The incident left biologists mystified. Since then there have been more attacks internationally. What is happening between the two apex predators of the oceans?