PG-13 | | Adventure, Drama, Horror
Two sisters vacationing in Mexico are trapped in a shark cage at the bottom of the ocean. With less than an hour of oxygen left and great white sharks circling nearby, they must fight to survive.
The majority of underwater filming took place at The Underwater Studio in Basildon, Essex UK.
Does my butt at least look cute in this?
When using an open circuit breathing apparatus as in the film, you breath compressed air, not oxygen (which is highly toxic to humans: a 100% oxygen tank can cause severe seizures starting from 4m depth). Air is a 79/21% mix of oxygen and nitrogen. At 47 meters down, you'd have very little time as the air you breathe is equalized to the pressure at that depth. Rule of thumb is 10m equals an atmospheric pressure, so 10m down you have twice the amount of air, 20m down, half again, etc. 1 bar of atmosphere on sea level + 4.7 bar at 47m is 5.7 bar (5.7 times the amount you use on the surface). Thus one hour is exaggerated. You would also be likely dealing with narcosis which is similar to being drunk, and simple tasks can be difficult to achieve.
$11,205,561 (USA) (16 June 2017)
$43,600,390 (USA) (18 August 2017)
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