Directed by: Renny Harlin
Starring: Samuel L. Jackson, Thomas Jane, Stellan Skarsgard, Michael Rapaport, Saffron Burrows, Jacqueline McKenzie
Plot hole: Considering the size and power of the sharks, why didn't the female just jump the fence at the end of the film. It was only 3 or 4 feet above the water at that point. (01:30:10)
Plot hole: Mako sharks have been known to leap out of the water, sometimes into boats. Therefore, it is quite possible, perhaps even more so, for these specialised Makos to jump.
Revealing mistake: When the shark first attacks and bites off Jim's arm, you can briefly see his real arm under his shirt as he's screaming in pain. (00:34:10)
Russell Franklin: You think water moves fast? You should see ice. It moves like it has a mind. Like it knows it killed the world once and got a taste for murder. After the avalanche, it took us a week to climb out. Now, I don't know exactly when we turned on each other, but I know that seven of us survived the slide... And only five made it out. Now we took an oath, that I'm breaking now. We said we'd say it was the snow that killed the other two, but it wasn't. Nature is lethal but it doesn't hold a candle to man.
Trivia: In both Jaws and Deep Blue Sea there is a scene involving a license plate. In Jaws it is removed from the belly of the dead tiger shark. In Deep Blue Sea it is removed from the teeth of a tiger shark. Not only are both sharks the same kind but both plates are from Louisiana. The license plate number is the same in both films: 007 o 981 Exp 72-73.
Question: I know that Susan was originally supposed to survive and kill the last shark but the test audience greatly disapproved of this. Why did the test audience hate the original ending? And why is this ending unavailable to watch?
Answer: Audiences viewed Susan as a villain of sorts, because all the mayhem and deaths in the film are a direct result of her breaching protocol, so they decided to rewrite the ending to have her die. As for why it's unavailable to view, perhaps the filmmakers didn't think people would be interested in seeing it.
Answer: They viewed her as a villain because it was her research that backfired and caused all of the chaos, even though none of it was intentional and it was a mistake. But audiences can be ruthless and unforgiving at times. However, the ending did feel like a cheap cop-out that created more plot holes. And many do feel she should have survived and completed her character arc. I don't know why they never offered the ending as a bonus feature on the DVD, but fans started a petition on the Change site calling for Warner to release the original ending. Thomas Jane is on board as well, as he's promoting it on his Instagram account. So that's probably the best way to get Warner's attention if you want to see the original ending.