Yes, it's based on real elements of diving. When you go deep - sea diving, there are a whole host of things that can go wrong. The movie '47 meters down uncaged' takes these real - life potential disasters and weaves them into a story. For example, the limited air supply is a very real concern for divers. In the movie, the characters are in a situation where their air is running out as they are trapped underwater, which is a scenario that could be a real - life nightmare for divers. And the presence of sharks makes the whole situation even more harrowing, much like how real - life divers might encounter unexpected and dangerous sea life.
One similarity is the danger of getting lost. In the movie, the divers get lost in the underwater caves, and in real - life diving, divers can easily lose their way, especially in complex underwater terrains. Another is the issue of limited air supply. Just like in the movie where the characters are constantly worried about their air running out, real - life divers also have to carefully manage their air when they go deep.