The 5 Submersibles Built To Reach the Ocean’s Deepest Trenches

The 5 Submersibles Built To Reach the Ocean’s Deepest Trenches

The Hadal Zone is the deepest part of the ocean and home to the world’s deepest trenches, which are the least explored. These extreme marine ecosystems have low temperatures, almost no sunlight, are nutrient-deficient, and have pressures exceeding 16,000 pounds per square inch, equal to balancing 50 jumbo jets on a human thumb! While 12 people have walked on the moon, just 3 have ever been to this zone. Only a handful of submersibles have been d…