The classic creature feature has been a staple in horror movies for a long time, and there hasn't been a monster that's been centre stage more often than the shark. When he dropped Jaws back in 1975, Steven Spielberg revealed just how successful a thriller featuring a terror of the deep could be. Since then, directors have desperately tried to emulate that same level of success by either paying homage or just blatantly ripping off the idea.
To avoid being litigated, directors have tried almost every conceivable angle with the many shark movies. They've changed the species of their particular apex predator, traded tense drama for B-movie slasher schlockiness, added extra heads, or even spliced shark genes with other animals. The list really does go on.
This approach has naturally created a huge gulf in quality between the few stand-out shark-infested flicks like The Shallows or Jaws itself and a great many other titles: If the Jason Statham-led movie owns the over-the-top action vibe that its trailers have been putting out, it will eat plenty of these low-budget, low-quality films for breakfast.