Blue Hole is located 10 kilometers north from Dahab along the coast, there is a asphalt road at first, and there is only a stone road in the last 2 kilometers after another famous dive site, "Canyon"; Blue Hole is almost a must-see for every diver who comes to Dahab, but because of the depth of 30 meters, it is necessary to hold an AOW or the same level of diving certificate to be allowed to scuba diving; If you just want to snorkel and see beautiful corals, then I would recommend you swim out of the blue hole to the coral wall on the left side, or go directly to the left side to ensure that the underwater scenery can surprise you; 4. The blue hole coral reef is very beautiful, the fish are colorful, but the number of varieties is average, the size is medium, after all, there is no ocean current, we can not ask too much; 5. The price of certified deep dive is about 20-25 dollars, and snorkeling is free.