The Blue Hole is one of Dahab's most famous dive sites. Located about thirty minutes jeep ride from Dahab, it is accessible from shore with entry into the blue water just a few metres from the rocky shoreline. Bedouin type facilities surround the main entry / exit points, with toilets, seating, food and drinks available. Whilst entry into the Blue Hole pool is one option, quite a nice alternative is to make a short walk to the north, along the rocky coastal path and enter through a gap in the shoreline rocks. This is done one diver at a time. Divers can then drop down an enclosed chimney in the reef exiting at 30 metres or so onto the sheer wall. The reef is near vertical at this point and as you head south (right shoulder to the reef) you'll come around an outcrop which makes for some fantastic silhouette photographs looking up towards the sunlight. The reef wall is home to lots of clownfish anemones and the blue backdrop makes a great viewing point for trevallies, jacks, barracuda and possibly white-tip and grey reef sharks.
As you travel south and ascend you will come to a colourful hard coral slope at around 10 metres, which leads up and over at 6 metres into the blue hole pool. It is best to spend most of the dive on the outside of the reef as the inside pool has little in the way of coral. Use your safety stop to either swim across the pool or around the edge (left shoulder to reef) until you reach the small wooden jetty and exit. Currents can be strong, usually north to south, on the outside of the reef so the northern entry point is often a good option, then drifting down to the pool with the current. Take care not to miss your exit, although if this does happen simply find a safe exit further down the shoreline and be prepared for a walk in full kit.