One bigass sinkhole
Great Blue Hole is every adventurous scuba diver’s dream destination. It is a gigantic circular underwater sinkhole that measures 300 meters across and about 410 meters deep. It is the largest ocean sinkhole on the planet! The surrounding ocean floor is relatively shallow and this gives it that iconic color contrast of dark and light blue water. It is even outlined with coral reef, which make it seem like a man-made formation instead of a natural one.
Getting into limelight
Great Blue Hole was brought to attention of the world by legendary explorer and diver Jacques Cousteau after he researched the sinkhole for his TV series Undersea World of Jacques Cousteau. Soon several researchers came to measure the dimensions and age of Great Blue Hole, resulted in even more popularity. Discovery Channel had ranked Great Blue Hole number one in their 2012 list of "The 10 Most Amazing Places on Earth".
Adventurers are welcome
Great Blue Hole is a must-add-item to the bucket list of any thrill-seeking diver. But keep in mind that this is not a casual dive, as there is a requirement that the diver should have completed at least 24 deep-sea dives before attempting Great Blue Hole. Unlike the easier dives in shallow coral reefs, Great Blue Hole is a deeper, darker dive through underwater caves. Occasional bull sharks make it even harder for novice divers.
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