Due to the increased density of water vs air, sound travels at a different speed and our human ears cannot determine direction underwater. Divers are trained to know this, but it is possible that the divers were panicked and not thinking correctly. One diver successfully hides from a shark by hiding behind a rock.
Much of the diving in the film is in fact, inaccurate. Based on the information provided by an experienced diver (via Discover Magazine), much of the information surrounding the SCUBA diving in 47 Meters Down was unreliable. When the cage's cable snapped, Kate and Lisa descended rapidly to the ocean floor.
If you're desperate for a shark fix you could do worse than 47 Meters Down (hello Sharknado or The Shallows) but after an initial bout of thrills and chills, Roberts film begins to rapidly slowdown that leads to a relatively uninteresting and uninspired feature.
Roberts has confirmed his story was entirely made up, though it may have been inspired by some shark attacks that have occurred in Mexico. However, the story and characters were not real. 47 Meters Down: Uncaged seems to be more Jaws-inspired and less Soul Surfer.
At 47 meters even an experienced diver with a fantastic air consumption rate would quickly drain their scuba cylinder, probably in less than 20 minutes. An inexperienced diver swimming, talking and being harassed by sharks MIGHT make it five minutes at that depth.
Everything Wrong With 47 Meters Down In 12 Minutes Or Less
Are there blind sharks in caves?
The Blind Shark lives in shallow coastal waters. Juveniles are often seen in high-energy surge zones, whereas adults are usually seen during the day in caves and under ledges.
Often called "the bends," decompression sickness happens when a scuba diver ascends too quickly. Divers breathe compressed air that contains nitrogen. At higher pressure under water, the nitrogen gas goes into the body's tissues.
Lisa is eventually saved by divers and is taken back to the boat, and comes to accept her sister was killed by the shark. Johannes Roberts had considered an even bleaker ending for 47 Meters Down where Lisa was left to die, but he realized the movie needed some hope.
All the Great Whites seen in the movie were computer generated. However, as any modern movie actor will tell you, they as well as the digital artists need something on the set for eyelines to follow and animated creatures to be properly placed within the frame.
Why are the sharks in 47 Meters Down: Uncaged blind?
They realize the shark is blind, having evolved within the caves, and they are able to distract the shark with sounds and make their escape. The group surfaces at a clearing where a pulley system ascender is set in place.
Also, note that her hallucination begins and ends with the same image: the blood from her hand drifting, as if in water. In the reality of 47 Meters Down's ending, Kate is shark bait. She's dead. Lisa survives.
See below for the exact times and descriptions of the 11 jump scares in 47 Meters Down, which has a jump scare rating of 3.0. Jump Scare Rating: The sharks sudden appearances are responsible for the bulk of the jump scares.
47 meters is equivalent to 154 feet 3 1/2 inches . The average depth of ALL the oceans world wide is 3688 meters so the 47 meters is 1.27% of the average depth of all the oceans ! It's 47 meters deep.
Although we cannot guarantee the sight of bull sharks (after all this is happening in the big pool where we have no control over what's going to swim by), we generally get visited by smaller groups of 3-7 bull sharks on some days and sometimes up to 15 bull sharks on others days.
The people on the boat pull Mia in before another shark can get her, (By the end, Mia and Sasha are remaining survivors after being an dreadful experience). The girls receive medical attention, but Mia and Sasha are just glad that they still have each other.
Thirteen species were found to dive to depths greater than one kilometre beneath the surface. Whale sharks were found to dive to a staggering 1,896m while great white sharks were recorded diving deeper than 1,200m, providing new and important insights into the behaviour of these ocean giants.
It is then revealed that Lisa has been hallucinating due to nitrogen narcosis and that she is still at the bottom of the ocean with her leg pinned under the cage, with Kate gone.
Moore: We were never more than 20 feet deep. Still pretty deep, though. We would go until our tanks ran out, which, depending on how much we were exerting ourselves, could be an hour to an hour and a half. Once you go down to shoot, you're down there.
At 47 meters down, a person is experiencing 5.67 atmospheres, which means they blaze through their air at nearly six times the rate they would at the surface.
Exposure to reduced barometric pressure shortly after diving can increase a diver's risk of decompression sickness (DCS). Before flying, a diver should remain at sea level long enough to allow the elimination of excess inert gas, mainly nitrogen, from tissues.
Tissues near the air-filled spaces of your body—such as your ears, sinuses, dental roots, and lungs—can be damaged if your body can't equalize the pressure between it and the surrounding water. This kind of injury is called barotrauma.
While scuba is generally safe, some risks are associated with the activity. The most common medical issues associated with diving are sunburn, seasickness, and dehydration (all of which are preventable). The most severe risks associated with scuba diving are arterial air embolism and decompression sickness(DCS).
