Dahab Blue Hole is a famous diving spot in the world. The sea water here is very deep, so the sea here presents a deep blue. In fact, this is a cliff under the sea, with a vertical depth of more than 1,000 meters. There are all kinds of corals on the cliff wall, so the scenery is very beautiful. It is one of the three major diving resorts in the world. Friends who like diving should not miss it.