Blue Hole is one of the most famous dive sites in the world – unfortunately not only because of its beauty, but because of the high number of fatalities and is therefore often described as the most dangerous dive site in the world. The reason for this is a 26m long tunnel at a depth of 52m. Even for experienced divers with perfect buoyancy control and extensive diving experience it is still a risk. Most accidents have been caused by incorrect estimates of air consumption and insufficient attention to nitrogen narcosis at this depth. A further risk is the occurrence of downward currents. The combination of these risks can lead to a fatal chain of events and thus to a large number of deaths (approx. 130). As the name suggests, the Blue Hole is a hole in the reef 150m wide and 110m deep. The Blue Hole itself doesn't really have an interesting underwater world, so we start the dive from El-Bells. We dive vertically down to 32m into a chimney surrounded by the reef. During the descent the chimney expands three times into bell-shapes, hence the name "EL Bells". However – if someone has trouble with the pressure equalization – it is permanently open to the outside, except for small bridges.
OBSERVATIONSClownfish, gorgonia, anthias, butterfly fish, angelfish, sponges, cleaning station.NOTESEl Bells ist gorgeous! Awesome reef structure.Beautyful coral garden on the saddle.Blue Hole itself is overcrowded with snorklers and depends on the tides, the saddle is to deep for snorklers.
Outside the chimney, the dive leads along a colourful steep wall where you are accompanied by flute fish, which can hide behind your compressed air bottle and then surprise the orange anthias with an attack. After a while you reach a saddle with a vibrant coral garden and an interesting current. This gives us access to the Blue Hole at a depth of just 7m. We prefer to dive right through the Blue Hole, as this enables us – providing visibility is good – to appreciate the size of this hole! In the middle of it you can see a rope with training stations for freedivers. For divers, this is entertainment of a special kind. By the way: one group of freedivers crossed the tunnel with one breath and I recently saw a YouTube video of a freediver who dived down El-Bells and up again. Also in just one breath!