Tag Archives: Challenger Deep

The US National Oceanic and Atmospheric Administration's remotely operated robotic submersible Deep Discoverer, used in 2016 to explore the geology of layered rocks in the Mariana Trench, at depths of around 20,000 feet (6100 meters).
1960: Mariana Trench – The Deepest Point on Earth

The Mariana Trench, the deepest point on Earth, was first explored by Don Walsh and Jacques Piccard, revealing a world of deep-sea biodiversity