What is the deepest ocean trench?

The deepest ocean trench in the world is the **Mariana Trench**, located in the western Pacific Ocean, to the east of the Mariana Islands. Its deepest point is known as the **Challenger Deep**, which reaches a depth of approximately 10,984 meters (about 36,037 feet or nearly 7 miles) below sea level. This makes it the lowest known point on Earth's seabed. The Mariana Trench is a crescent-shaped trough formed by the subduction of the Pacific Plate beneath the smaller Mariana Plate. The immense pressure and darkness at these depths create an extreme environment where few organisms can survive. Despite this, scientists have discovered specially adapted life forms, such as certain types of amphipods and extremophile bacteria, thriving in these harsh conditions. Exploration of the Mariana Trench has been limited due to its extreme depth and pressure, but manned and unmanned submersibles have made several dives to study it. These explorations have expanded our understanding of deep-sea geology, biology, and the limits of life on Earth.