The ocean that is the deepest in the world is the Mariana Trench, located in the western Pacific Ocean. The trench reaches a maximum known depth of about 10,994 meters (36,070 feet), specifically at a point known as Challenger Deep. This extreme depth makes it the most profound natural feature on Earth. The Mariana Trench is characterized by unique geological formations and bizarre ecosystems adapted to extreme pressures and darkness. Researchers continue to explore this mysterious environment, revealing new species and deep-sea phenomena, highlighting the importance of marine exploration and conservation efforts in understanding our planet's deepest oceans.