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Scuba Diving Blue Holes In The Bahamas on Scuba Dive Vacations

Updated on December 29, 2015

Blue Holes and scuba diving.

The Bahamas has the greatest number of Blue Holes than any other area. Scuba diving is the only way to view these great ancient underwater caverns.

Diving into blue holes has also been known as a dangerous extreme sport.

Scuba diving vacations or holidays to the Bahamas do not come cheap, but nothing can compare to the awesome and deadly underwater world within.

The Bahamas boast the deepest Blue Hole in the world. Deans' Blue Hole is estimated to be approximately 203 meters deep with a cavernous 100 meter wide chamber at the base.

Scuba diving the Blue Holes is no easy task. An average of 20 scuba divers each year have lost their lives in their quest to view these wonders of the world.

What is a Blue Hole ?

What is a Blue Hole ? A Blue Hole is an underwater cave or a sinkhole, and are typically found in low lying areas across the globe.

The top of the sinkhole can be distinguished by the deep blue color of the ocean at the sinkholes entrance, compared to the lighter colour of the surrounding ocean. Blue Holes are shaped similar to some vase designs, where the opening is small compared to the base.

The cavern at the base can be as wide as 100 meters whereas the opening may be less than 20 meters wide. There are usually hundreds of meters of tunnels and smaller caverns eroded by time turning off of the main cavern.

Blue Holes were created during the last ice age when the sea level was much lower than today. The limestone rock was worn away by the elements creating deep caverns.

As the ice age began to recede and the oceans rose, the caverns began to fill with salt water.The combination of salt water and fresh water created Halocline. Halocline is the chemical reaction between fresh and salt water which is extremely corrosive to rock formations.

This chemical reaction allowed many lengthy tunnels to be created at varying depths of the Blue Hole. This is where scuba divers have discovered various prehistoric artifacts, and skeletal remains.

The lower part of the Blue Holes are oxygen free. This means that there is no life down there and that anything that lived thousands of years ago would have their bones and shells perfectly preserved.




Venturing inside a Blue Hole is not for the faint hearted. There are many dangers which can befall even an experienced cave diver.

Prior to a dive, all equipment is checked, then checked, then checked once more. Even their back up plans have back up plans. Scuba divers may carry a knife with them at times during their descent, Blue Hole scuba divers usually carry about four types of knives. Each one has a specific use.

Cave divers use a guide rope whenever they descend. This is for them to be able to hopefully find their way back to the top of the sinkhole. One danger is that disturbed silt on the sea bed can cause dense clouds for several hours.

Even the guide ropes can become tangled in a cave divers equipment and cause problems.

The collective silt of thousands of years can create a thick and dense cloud in the usually clear waters in the Blue Hole. This hazard can restrict visibility to nil.

Once visibility is nil, then even finding the guide rope is very difficult. This is where some Blue Hole divers on vacations have lost their lives. Their oxygen runs out before they can make it back to the surface.

The crumbling rock formations can give way at any moment. Many underwater rockfalls occur blocking tunnels, creating dense clouds of silt, and making holes smaller for divers to get through.

Stalagmites and stalagtites as well as other sharp rock formations can easily tear through air hoses or skin. The water temperature even at depths of 130 feet is quite warm.

All cave diving professionals carry an extra oxygen tank or have them at hand in case of emergencies.


Many prehistoric skeletons have been discovered across the globe in Blue Holes. Scuba diving is also a sport for the archaeologist in all of us.

Huge turtle shells and skeletons of extinct species of crocodile have been found on the bottom of sink holes. Bird bones have also been discovered over 120 feet below the sea level.

There are many previously undiscovered species being brought to life thanks to the adventures of scuba divers and their hazardous hobbies.

Make scuba diving holidays and vacations in the Bahamas on the list of things to do this year, it will be unforgettable.

Free Link: Scuba Diving In Truk Lagoon.


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      lesliebyars 4 years ago

      I voted your hub awesome and beautiful. I pinned it to pinterest as well.