Dive Mission Into ‘The Great Blue Hole’ Uncovers Dark Secret Hiding In The Murky Depths
It’s a diver’s paradise. From above, the Blue Hole of Belize is astonishingly beautiful, a sapphire pool contrasting with the warm turquoise waters of the Caribbean Sea surrounding it. And as one gets closer to its edge, the sheer immensity of its drop into the abyss becomes that much more apparent.
A team of scientists and conservationists, led by business mogul Sir Richard Branson and Jacques Cousteau’s explorer grandson Fabien Cousteau, sought out to fully explore its depths and properly map them for the first time. But what they would discover at its bottom would leave them horrified.
1. Quest To The Caribbean
Fabien Cousteau is a world-renowned deep-sea explorer with a passion for ocean conservation. From scoping out underwater Civil War shipwrecks to swimming with and documenting sharks up close and personal on multiple occasions, he’s done it all. One recent mission in particular, however, bore a special personal resonance for him — and defied expectations.
In 2018, he set sail for the west coast of the Caribbean Sea, in the tropical Central American nation of Belize. He was intent on exploring the fabled Blue Hole, the largest oceanic sinkhole in the world — and its dangerous depths. What he would find would leave the scientific world aghast.
2. Extraordinary Ecosystem
The Belize Barrier Reef, which lies just off the shores of the Central American nation, comprises a vast chunk of what is called the Mesoamerican Barrier Reef System. It stretches from Mexico’s Yucatán Peninsula southward to Honduras, making up the second largest such reef network on the planet, following the Great Barrier Reef in Australia.
While sailing through the region in 1842, famed naturalist Charles Darwin himself gushed that it was “the most remarkable reef in the West Indies.” The Blue Hole stands gaping at the reef’s center, its deep indigo waters standing out sharply from the shallows of the reef surrounding it. And upon first glance, it becomes clear Darwin did not exaggerate.
3. Tantalizing Depths
At the center of Lighthouse Reef in the easternmost part of the Belize Barrier Reef, the Blue Hole is a natural Mecca for scuba divers, ever curious to figure out just what exactly IS down there at the bottom of the 420-foot drop. But it’s far from without its perils: divers must complete at least 24 dives before taking the plunge.
This enormous yawning underwater sinkhole is cavernous enough to hold two Boeing 747 planes, with room leftover. Peering into the darkness of its depths leaves the observer burning with curiosity. With such a daunting dropoff into the murky unknown, the question all who have set eyes on the Blue Hole ask is: what mysteries and monsters could lurk beneath?
4. Family Affair
For Fabien Cousteau, this mission held special personal resonance. His grandfather was Jacques Cousteau, the world-famous French oceanographer who had become the most famous and well-beloved deep sea explorer. Jacques had come to the Blue Hole in 1971, declaring it to be one of the top five diving spots on Earth.
But the equipment he had used was not as sophisticated as the tools that his grandson now possessed, and he had only gone for a brief peek. Now, it was time to more thoroughly map and explore its depths. And Fabien had another legendary figure at his side on the mission.
5. Virgin Voyage
Joining Fabien Cousteau on his expedition to the Blue Hole of Belize was none other than iconic English business mogul and conservationist Sir Richard Branson. The Virgin Group tycoon was keen on spearheading the fact-finding mission to the bottom of the Blue Hole and to thoroughly explore its depths himself in the team’s submersible.
Together with their main pilot, oceanographer Erika Bergman, Sir Richard and Cousteau prepared to make the voyage in their trusty vehicle, the Aquatica submarine. Everyone was excited to learn more about the nature of the Blue Hole. They had no clue what would be waiting for them, lurking down in the gloom of the deep.
6. Environmental Mission
Sir Richard Branson is known for using his position as a billionaire and public figure to promote awareness of climate change and ways to help combat it by creating a more sustainable planet for future generations. He has even hosted a summit on global warming at his own private residence in the British Virgin Islands.
7. A Wave Of Media Coverage
The mission into the Blue Hole of Belize was unlike any prior expedition. This was to be the deepest venture any scientific team had made into the sinkhole before, and while it was by no means the deepest point in the area, nor the world’s deepest aquatic sinkhole, its unexplored interior left tantalizing questions about its geological and biological history.
Sir Richard Branson had dubbed the mission as “planetary inner space.” The high profile of the participants in the mission only increased the intrigue surrounding it. Their descent into the Blue Hole would be live-streamed across the world on the Discovery Channel. Cameras rolling, the submarine sped along. The excitement was palpable.
8. Cozy Ride
Not since Titanic director James Cameron plunged into the Mariana Trench had an underwater expedition attracted so much coverage and excitement, boosted no doubt by the celebrity of the submersible’s acclaimed passengers. The Aquatica submarine had an enormous dome over the top, affording those inside views overhead, to their side, in front, and behind.
After descending for roughly 10 minutes in the submarine, the team of underwater explorers began to skirt the walls of the Blue Hole. The images broadcast from their voyage showed what looked almost like the side of a crater that had been created from the impact of a celestial body. But, as they were about to see up close, the Blue Hole had been created by totally different forces.
9. Cave Formations
The visibility underwater began to dissipate as the submersible headed toward the bottom of the Blue Hole, but quickly enough the formation revealed to them a clear testimony to the geological processes that had shaped it. The Aquatica shone light through the falling sediment, illuminating an entire complex of hanging cave stalactites.
The presences of these dangling formations could only be possible in a structure that had once upon a time been situated on dry land and created through the dripping of water into a cave. So how had this cave structure, some 43 miles east of any dry land, ended up submerged beneath over 400 feet of ocean?
10. An Ominous Warning
For Sir Richard Branson, seeing cave stalactites underwater was, in his words, “One of the starkest reminders of the danger of climate change” that he had ever seen. The reason for this had come in the aftermath of a massive ice melt at the end of the last major Ice Age.
Sea levels in the Caribbean had risen so dramatically that they swamped vast swaths of land. At 300 feet beneath the surface, Branson noticed the shift in the coloring and variation of the formation, clearly demarcating what rock had been formed underwater and what rock above land. The repercussions of these forces had not remained underwater.
11. Mineral Layers
Several years before Sir Richard Branson, Erika Bergman, and Fabien Cousteau took the plunge into the waters of the Blue Hole of Belize, a team of researchers arrived to the area from Louisiana State University and Rice University. They had an entirely different mission — to document the chemical composition of its walls.
The team wanted to understand if there was a correlation between the Blue Hole and the decline of a civilization on land in Belize. They scooped up samples of sediment from the Blue Hole, which could be dated back to between 800 and 1000 CE. What they found could potentially answer one of history’s greatest mysteries.
12. Decline Of Civilization
The original inhabitants of Belize, as well as the surrounding countries, had been the Maya civilization. Archaeologists, historians, and scientists alike have been baffled as to why the Maya suddenly began en masse to abandon the cities they had built. Their empire inexplicably fell apart — and the answer could have been in the Blue Hole.
The samples from the Blue Hole sediment showed abnormally low levels of titanium and aluminum, elements usually worn out of rock and into the water by tropical storms. This meant the period of the Maya decline had likely been marked by a terrible drought. But what was at the bottom of the Blue Hole would mark a far more modern calamity.
13. The Dead Zone
Close to the bottom of the Blue Hole, Fabien Cousteau and the team ran into something no creature ought to have been able to survive: a deadly layer of hydrogen sulfide, 20 feet thick. This was the perfect space to test out one of the submersible’s state-of-the-art technologies before they reached their final goal.
They measured the oxygen levels and discerned the water’s quality. Beneath the hydrogen sulfide were the carcasses of many crabs, conches, and other organisms that had slammed into the wall of hydrogen sulfide, become mired in it, and ran out of oxygen. But there was something far more horrifying up ahead.
14. Base Level
Finally, after passing through the mire of the hydrogen sulfide sheet, the research team’s submarine managed to reach the bottom of the Blue Hole. For Fabien Cousteau it was especially thrilling, as he was about to be able to expand upon the work his grandfather had started almost half a century before.
All aboard were eager to see what the bottom of the hole looked like. They would finally be able to properly map the expanses of this massive geological anomaly. Although it was clear to them that nothing would be able to survive the hydrogen sulfite blanket, they were about to discover something that’d leave them in dismay.
15. Underwater War Zone
As they mapped out the base of Belize’s Blue Hole, Cousteau and his team found out just how deceiving appearances can be. From above, the Blue Hole looks like a beautiful, pristine anomaly of nature. But on its muddy floor, a dark secret was revealed: the Blue Hole was completely covered with figures that were not easily discernible at first.
As the submarine scoured the sea bed, the team saw what they were faced with: masses of plastic pollution. Empty bottles, covered in underwater grime littered the base of the Blue Hole. Not know what they find initially, the expedition ultimately revealed yet another victim of human consumption, an underwater garbage dump. The team members were saddened and disgusted. And Sir Richard Branson knew precisely what had to be done.
16. Real Monsters
What had started out as an expedition to map out the Blue Hole had become a harsh reminder of the destruction that plastic had wreaked on the planet. As it turned out, there were no monsters down there at the bottom of the Blue Hole except for the ones that mankind had created: pollution.
Sir Richard Branson was spurred into action. From the get-go, he had partnered the mission along with Ocean Unite, a conglomerate of conservationists from all walks of life, in order to promote awareness of the condition of the ocean. And they had a far bigger and more dramatic goal than just the Blue Hole could contain.
17. Longterm Goals
Sir Richard Branson and Ocean Unite’s goal is to set aside at bare minimum 30 percent of world oceans, to be considered a protected area with legal consequences for damaging it. They hope to achieve this goal by 2030. In order to do that, Sir Richard had to combat pollution wherever he encountered it.
Upon arrival in Belize, even before the horrifying discovery in the Blue Hole, he met with the Prime Minister of Belize, Dean Barrow, and his wife. The mogul hoped to convince him to place 10 percent of Belize’s national territorial waters under protection, and to ban grill nets that damage marine ecosystems. And something big was in the works.
18. Hope For The Future
After such a sobering discovery, the research team needed some good news. They knew that nothing happened in a nutshell, and that if action was not taken as soon as possible, the problem of discarded plastic and other human-generated waste products would surely engulf the rest of the reef, endangering the ecosystem’s survival.
Thankfully, back on land, it would appear that changes were coming along quickly. The Prime Minister of Belize was supportive of Sir Richard Branson’s proposal. The team came out of meeting him with hopes that he would make a stirring announcement about it before the New Year. The PM’s wife is also a self-proclaimed supporter of ocean conservation. And Branson himself took a bold step.
19. Implementing Change
Impacted by what he had seen choking the bottom of the Blue Hole, Sir Richard Branson knew he had to take action, starting with the way he managed his own enterprises. Branson’s airline companies under his supervision and leadership have now pledged themselves to cease using single-use plastic on board their flights.
Branson has stated that he’s looking with grave concern toward the future, noting that his grandchildren will be in their thirties in 2050, and he can’t bear imagining them in a future without coral and other wonders the ocean contains. Belize has pledged to phase out single-use plastic during 2019. But this expedition to Belize was far from the first time that Branson had pledged himself to saving the environment.
20. Earth On His Mind
Sir Richard Branson has either volunteered himself as a contributing member or the founder of a substantial number of charities and NGOs related to preservation of the environment. For starters, he has initiated a campaign to set aside an entire island in the Caribbean for boosting the population of the most-beloved of Madagascar’s lemur species, the endangered ring-tailed lemur.
Along with the incentives he has developed for his companies to be more environmentally-friendly, such as the annual Special Award for Environment, Sir Richard also is a key member in the organization OceanElders. The group of influential artists and celebrities is devoted to raising environmental awareness with help from the likes of Neil Young and Jackson Browne to Fabien Cousteau’s own father Jean-Michel. But what are big names doing about the problem discovered in the Blue Hole?
21. Plastic Problems
The amount of plastic waste humankind has created, as evidenced by the sobering finding at the bottom of the Blue Hole of Belize, is one of the largest environmental disasters facing the planet. Some of the world’s most beloved public figures, including Hollywood A-list actors, have pledged to join the fight.
Immediately following the colossal success of his film Titanic, Leonardo DiCaprio started his namesake Leonardo DiCaprio Foundation with the express goal of aiding and strengthening organizations devoted to environmental work. One branch of his foundation is the Plastic Solutions Fund, tasked with phasing out non-essential plastic usage by 2035. Hopefully, starpower will see to it that the Blue Hole in Belize is properly cleaned. But in Egypt, a different Blue Hole faces a doubly sinister issue.
22. Tropical And Dazzling
Stretching from Israel in the north to Yemen in the south, the Red Sea is the northernmost tropical sea on the planet. It is a notable hotspot of biodiversity, and vast swaths of coral reef make its waters, particularly along the Sinai Peninsula, an absolute must-visit for any diving enthusiast.
Just north of the seaside tourist paradise of Dahab, Egypt, lies one of the Red Sea region’s most famous — and notorious — natural wonders. The Sinai Peninsula has its own Blue Hole, and although it is just slightly smaller than its counterpart across the globe in Belize, its eerie reputation precedes it.
23. Easily Accessible
Unlike the Blue Hole of the Mesoamerican Barrier Reef, taking a long boat ride out from shore is not necessary in order to reach the Blue Hole of Sinai. In fact, it can be accessed quite easily from the rocky shores of the beach. But despite how close it is to land, looks can be deceiving.
Situated in the middle of the coral reef, the Blue Hole presents its own drastic drop-off point before the entry to the deeper waters of open sea. And depending on what access point divers may use to enter it, the Blue Hole could potentially be his or her last swim.
24. The Arch
The main secret to why the Blue Hole is so notoriously dangerous lies in a structure known by professionals as “The Arch.” This is a tunnel under the coral reef that connects between the waters of the Blue Hole to the Red Sea itself, on the other side of the reef.
While no proverbial monster lurks in the Blue Hole of Sinai’s depths, an invisible presence stalks and disorients divers, dragging them down to their doom. Called nitrogen narcosis, the phenomenon describes the altering effects of depth on the consciousness of the diver. The effects on a diver, no matter how prepared and experienced they may be, can be catastrophic.
25. Fatal Attraction
Because of underwater illusions and perceptions of distance along The Arch, it can appear far shorter than it actually is, further disorienting divers. Moreover, nitrogen narcosis can cause hallucinations. Whatever the main contributing factor is, there is a reason only the most experienced divers are allowed in the Blue Hole.
The Blue Hole in Sinai is considered possibly the most dangerous diving site in the world. Estimates run as high as 200 different people who have entered its waters and not come out alive. It remains one of the most seductively beautiful natural sites in the region, breathtaking from above, deadly from below, yet it may also be susceptible to the man-made dangers of pollutants that lurk on the nearby shores.
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