The cast also consisting of Sylvester Stallone’s daughter Sistine Rose Stallone, Davi Santos, Teen Wolf actor Khylin Rhambo, NCIS’s Nia Long and My Big Fat Greek Wedding’s John Corbett was an exhausting filming process, as the cast also told CinemaBlend. They started filming exterior shots in the beautiful Dominican Republic, which didn’t feel like work. Once they got in the tanks to film 80% of their shots for two months, it was a harrowing shoot.
Article source: https://www.cinemablend.com/news/2478236/the-success-of-47-meters-down-got-the-new-cast-pumped-to-make-the-sequel