No, it's not a Bad Sci-Fi movie title, although it could be. A pod of killer whales off Costa Rico kill (and presumably eat) a 10 ft Tiger shark:
The King's Fall from Edwar Herreño on Vimeo.
Pod of Killer Whales off California and South Australia are known to attack and kill Great White sharks. Maybe they just wanted a change of pace. Bluefish are good after a steady diet of Striped Bass.