As a diver with not very deep qualifications, I know that underwater navigation skills are very important. The diving certificates of the two are the lowest level diving certificates, which means they have just learned to drive and obtained a driver's license. The course of open water diver did not learn any underwater navigation technology, but the male protagonist actually has the awareness of navigation. It can be inferred that the male protagonist is not a special dish. But why do you have the consciousness of wearing a diving knife, but not a whistle, a puller, a compass, and other survival tools? You can guess your position by looking at the wind, the weather, and the surrounding environment. For example, waves always hit the beach, and if you keep swimming, they will always hit the shore. Of course, if those are all established, then this movie won't be made. Regarding the protagonist of the real incident, it is inferred that he is a novice diving player, how necessary it is to learn about rescue knowledge! In fact, diving is still very safe, accidents are human negligence. Hope you all dive safely.
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