47 Meters Down (2017)
Johannes Roberts’ 47 Meters Down Two sisters on Mexican vacation are trapped in a shark observation cage at the bottom of the ocean, with oxygen running low and great whites circling nearby, they have less than an hour of air left to figure out how to get to the surface.
They arrive the next day at the dock in the wide seas waiting for the guys they met the night before. she is still afraid, but Kate told her she is going to be fine. The guys arrive and talk to the Captain. The women follow and both lie about having experienced divers even though only Kate knows how to dive.