Bruce (the mechanical shark from Jaws) has some real-life competition. This estimated 20+ foot long female white shark, christened "Deep Blue" is the largest living white shark ever filmed:
http://www.dailymail.co.uk/news/article-3194207/The-real-life-Jaws-World-s-largest-shark-nicknamed-Deep-Blue-flashes-razor-sharp-teeth-new-awe-inspiring-video.html