47 Meters Down: Uncaged (2019)

A group of four teenage girls go on a diving adventure in a ruined city completely submerged under water. As they begin to explore the city's deep grid of caves, they discover something terrifying about this watery maze. Once they swim beyond the point of no return, the girls learn to their horror they have unwittingly plunged themselves into the territory of the deadliest species of shark in the ocean.