The name of the lowest point on Earth is the Challenger Deep, located in the Mariana Trench in the western Pacific Ocean. It reaches depths of approximately 36,000 feet (about 11,000 meters) below sea level, making it the deepest known part of the world's oceans. The challenge of exploring Challenger Deep arises from extreme pressure, darkness, and cold temperatures. Several manned and unmanned missions have ventured here to study its unique environment and the organisms that thrive in such extreme conditions. Discovering life in these depths expands our understanding of Earth's biodiversity and the resilience of life in harsh environments.