The World's Most Unique Underwater Adventures

For most, the depths of the ocean are shrouded in mystery.

Few often venture below the surface of the deep blue sea, and even fewer have explored its far-reaching corners.
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Heck, according to the National Ocean Service, in all of the research and exploration scientists have accomplished up to this point, still we've covered less than five percent of the entire ocean.

In other words, to say there's lots more exploring and discovering to be done is an enormous understatement.

Luckily, though, even for the general public, there are lots of different ways to explore the underwater world.

Whether in your own personal submarine or even a freestanding underwater oxygen bar (OK, so it's not the ocean, but hey, it sure sounds fun) here's a look at some of the most unique and exciting ways you can embark on an underwater adventure.

Cave Diving the Tulum​ Cenotes of Mexico

Sandro Lonardi, a former dive instructor and current team member at diviac.travel says Mexico's cenotes (or natural swimming holes that result from collapsed limestone bedrock) are "like a heaven for cave diving." "[There are] kilometers and kilometers of underwater tunnels with incredible clear fresh water," he said. Bridget Pearson a diviac.travel blogger adds, "There are thousands upon thousands of miles of underwater cave system, and more is being discovered every year. Some areas are completely untouched by humans, while others have remained pristine since prehistoric times."