Corrected entry: Didn't anyone think it strange that after initial shark attack that no one of the group wonders where Preach is or mentions him, yet they don't seem a bit surprised when he saves them all? (01:08:05)
Corrected entry: How did the sharks know that they could "sink" Aquatica? It was already underwater. Were they genetically enhanced and provided with blueprints on how to do this? The whole concept is flawed. Despite having enhanced intelligence, they would still have to learn that CCTV cameras transmit images to the cast. They could never know that wounding someone would bring a helicopter they could use to sink the structure. The whole concept of the film is based on the, frankly, wrong assumption that being more intelligent makes a creature automatically 'know' more stuff. Well it doesn't. It would just make them more able to learn and understand. So who taught them?
Corrected entry: The female lead says that when her father was suffering from Alzheimer's, she had to tell him every day that his wife was dead "and watch that knowledge hit him like a train wreck". If he had no memory, why make the poor man suffer like that? Why not just tell him she was down at the shops every time he asked where she was? (00:05:10)
Corrected entry: If these sharks were herding the people to the top of the structure to get them to flood it, why did they keep killing them off? If no one was left who would flood the building?
Corrected entry: In the beginning when the blonde-haired ex convict was in the tunnel surveying the sharks, the sharks co-ordinated an attack in which they both hit the tunnel in the same second. How could they have done this? Becoming smarter does not give them the ability to communicate.
Corrected entry: The sharks cut the electricity for the lights when they were trying to catch Carter. However, when the helicopter comes Brenda is using a spotlight.
Corrected entry: Just before the two sharks simultaneously attack Carter while he is diving through the underwater cage-like corridor with his harpoon we see the rest of the crew monitoring this with the help of tree monitors displaying the pictures of the underwater cameras in the cages (later destroyed by the sharks). The view on the left screen is taken from a camera that keeps moving backwards while Carter swimming towards it. This displayed shot can't be taken by one of the fixed observation cameras.
Corrected entry: At one point in a shaft L.L. Cool J's character throws down a rope to save a few of the characters from the fast rising water. The shot shows them pull back the rope and shut the door. A few scenes later, the rope is hanging down the shaft again. (01:08:25 - 01:12:05)
Corrected entry: Towards the end of the film when Carter is being dragged along by the shark, the shark rams into a wire fence. You can see that half of Carter is dragged through the hole in the fence. When you see the underwater shot of the shark exploding, Carter is to the left of the whole and is within the compound. When Preach calls out to him, he is outside the compund. How did he move so fast? (01:35:40)
Corrected entry: In the scene where the cook is trapped by the shark, the water in the kitchen is about waist-high. When Preacher jumps out of the oven, the shark turns to get him and you see that the shark is completely underwater. Those sharks are supposed to be really big, so you should at least see the fin when it's underwater.
Corrected entry: At the end of the movie, Dr. Susan McCallister cuts her hand and jumps into the water to bring the shark closer. All she had to do was stick her hand in the water so the shark could smell the blood and would come closer. Has she done this, she might have lived.
Corrected entry: The sharks can break through metal, but not the glass in the oven where one of the characters is "hiding". Must be some strong glass...
Corrected entry: In the scene where the head scientist takes her wetsuit off to electrocute the shark, her wetsuit is soaking wet so it would make no difference if it was made of rubber or not, she should have been shocked as well.
Corrected entry: For the entire wet lab scene, the Mako shark is half-submerged in the pool. We are to assume that sharks only need to be in water to survive. However, sharks must also keep swimming in order to get oxygen-rich water into their gills. Without this, they would drown or suffocate. Certain species, such as the Nurse shark or the Australian Wobbegong, have adapted to remain motionless on the ocean floor for hours at a time. But an oceanic species like the Mako would have died in the wet lab's conditions.
Corrected entry: Toward the end, as people are fleeing the coastline, we see a group of refugees watching a television on a truck alongside the road. They are watching MSNBC. Must have a pretty long cable.
Corrected entry: If these sharks are strong enough to open metal watertight doors, how come they couldn't break through the fencing without sinking the place.
Corrected entry: Sharks are attracted to the smell of blood not the sight of it or something that looks like it. So in the opening scene when the wine is knocked over into the water it shouldn't be a big deal.
Corrected entry: At the very end of the movie, when the shark is getting out through the fence, it (the shark) backs up. Correct me if I'm wrong, but sharks can't swim backwards, no matter how much gene therapy they've had. Swimming backwards would cause water to surge into their gills, thus killing them.
Russell Franklin: Just what the hell did you do to those sharks?
Dr. Susan McCallister: Their brains weren't large enough to harvest sufficient amounts of the protein complex. So we violated the Harvard Compact. Jim and I used gene therapies to increase their brain mass, a larger brain means more protein. As a side effect the sharks got smarter.
Janice Higgins: You stupid bitch!
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 but both plates are from Louisiana. The license plate number is the same in both films: 007 o 981 Exp 72-73.
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