The deepest ocean in the world is the Pacific Ocean. It contains the Mariana Trench, which reaches a depth of approximately 36,000 feet (about 10,900 meters). This trench is the deepest point on Earth and is located east of the Mariana Islands. The Pacific Ocean covers over 63 million square miles, making it the largest ocean and a critical component of the Earth's ecosystems. Its depths harbor unique marine life and geological features that are still being studied by scientists.