47 Meters Down
No help above, no hope below
47 Meters Down is 2017 American survival horror film directed by Johannes Roberts, co-written by Roberts and Ernest Riera, and starring Mandy Moore. Claire Holt, Chris J. Johnson, Yani Gellman, Santiago Segura, and Matthew Modine.
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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.