The main attraction of Blue Hole is the cave. The entry point starts at 17 meters before going to 35 meters in a series of submerged small pinnacles. The entrance is quite wide, while the whole cave resembles a dome. A flashlight is necessary to spot the sweetlips, jacks, Napoleon wrasse, surgeonfish, and reef sharks passing by inside the cave.

The cave walls are decorated with corals and Gorgonian fans in different colors, making the dive here worth the effort. Blue Hole is only aimed at experienced divers due to the topography and currents.