In 47 Meters Down: Uncaged, two sisters' scuba diving trip turns into a fight for survival, culminating in a climactic and thrilling showdown. The sequel to 2017's shark horror movie 47 Meters Down starring Mandy Moore, 47 Meters Down: Uncaged has a brand new cast, story, and setting. In the film, Mia (Sophie Nélisse) and her new step-sister Sasha (Corinne Foxx) are encouraged by their father Grant (John Corbett) to go on a shark tour boat ride in order for them to bond. Instead, the two and their friends decide to scuba dive and explore an underwater Mayan ruin.
https://screenrant.com/47-meters-down-uncaged-ending-explained/