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5 Of The Most Treacherous Dive Sites


Diving is fast growing to be one of the world’s favourite outdoor activities, having used to be a very exclusive sport. Now it’s something that everyone can take part in all over the world.

It has quite a large degree of difficult to go along with it though, in terms of its technicality and the difficulty that the world itself can provide. So if you’re looking for a new dive site, just beware of these.

The Blue Hole, Belize –

Now one of the most famous and popular dive sites in the world, The Blue Hole still poses significant challenges to divers. Located in the Lighthouse reef in Belize, the Blue Hole is a sink hole that has been formed by many things over the course of the last 150,000 years. It is roughly 300 metres across and 125 metres deep. A prerequisite of diving in the Blue Hole is to have logged at least 24 dives beforehand as it poses the challenges of depth, pressure, caves within, stalactites and swirling and unpredictable tidal affects. One for the bucket list, and one to be careful with.

flickr | The TerraMar ProjectCenote Esqueleto, Mexico –

The more common name of ‘Temple of Doom’ certainly does say a thing or two about the risk factor of this dive site. This underground cave system has claimed quite a few lives thanks to its disorientating nature, narrow passages and sharp rocks. This one is tricky for the most experienced of divers and doesn’t even have a ladder or stair down into the caves…you simply have to jump off a 3 metre cliff. The temple of doom is claustrophobic cave diving at its best and certainly worth a spot on a list of the world’s most treacherous dives.

flickr | Oblivious DudeDevil’s Cave, Florida –

Opened to the public for diving in the 1990’s, the Devil’s Cave is an underground river and cave complex that was exposed to the surface. It maintains a fairly warm temperature mostly throughout the year, causing clouds of vapour to rise and hover over the site, the result of this being it caused early people in the area to see it as a chimney of hell. The difficulty in diving here comes from its interwinding chambers and caverns, ranging from one to 27 metres deep. The flowing river currents, vortexes and crumbling rock also add their own difficulties to the dive site. If you brave it thought the cave has fascinating characteristics including old bones from people and animals from the Pleistocene era and artefacts from early man.

flickr | Matt MontagneGerman U-Boat, New Jersey –

This WWII relic lies 60 miles off the coast of New Jersey and wasn’t discovered until a keen diver re-found the U-Boat from WWII records in 1991. The sub lies at a depth of 73 metres, which is a treacherous depth for any diver, adding into that the cold water and strong under water currents and this one is tricky. That’s not to mention the overhead coverage of the U-Boat should you wish to explore that, something that rings alarm bells of any diver.  So dangerous in fact is this dive site that three guys who discovered it died while exploring it.

flickr | NOAA's National Ocean ServiceThe Blue Hole, Egypt –

The second blue hole to appear on this list, this one in the Red Sea is even more notorious than the first. The nickname of this place sends a chill down the spine: The Diver’s Cemetery. This sink hole is 130 metres deep with the appealing characteristic of having ‘The Arch’ located within that divers can swim through into the open water of the red sea. The Arch is a badge of honour for any diver, so much so that 150 people have died attempting it in the last 10 years. The arch is at 56 metres, well beyond PADI maximum recreational dive limits. At this depth many are disorientated and swim deeper to find the arch and are fatally trapped in swirling currents and murky water.

flickr | Nick LongDishonourable mentions –

•    Eagle’s Nest Sinkhole, Florida
•    Samaesan Hole, Thailand

If you haven’t been put off by what you’ve read and want to learn to dive, Frontier has multiple diving opportunities worldwide, you can find out more information here.

In any sport there has an ‘Everest’ that can be achieved to mark one’s place as a participant of that sport, and all of the dive sites mentioned here would certainly be that. If you attempt any of these you are certainly made of some stern stuff.

By Guy Bezant - Online Journalism Intern

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