Within the Mariana Trench lies the deepest point on Earth’s surface: Challenger Deep. It’s a place that only the most intrepid ocean explorers have visited, risking their lives in robust submersibles that allow them to descend 11km (7miles) underwater and witness this incredible location with their own eyes. As submersible design has improved, the journey has become more accessible, but the simple fact remains more people have been to space than to this point on the ocean floor.
DSV Limiting Factor This deep-submergence vehicle (DSV) is a state-of-the-art two-man vessel that has made multiple journeys to Challenger Deep. In 2019, it became the first crewed submersible to reach the deepest point in all five oceans and has also explored many notable ship wrecks including the Titanic.