The deepest part of the ocean is the Mariana Trench, located in the western Pacific Ocean. Its deepest point, known as Challenger Deep, reaches approximately 36,000 feet (around 10,973 meters) below sea level, making it the deepest known location on Earth. The trench is formed by the subduction of the Pacific Plate beneath the Mariana Plate. Due to extreme pressure, darkness, and cold temperatures, the trench is a unique and largely unexplored environment hosting specialized marine life. Researchers study the trench to better understand deep-sea ecosystems and the geological processes shaping our planet, contributing to knowledge about oceanographic and environmental science.