Final answer:
The Mariana Trench, featuring the Challenger Deep as its deepest point, is located in the Pacific Ocean.
Step-by-step explanation:
The Mariana Trench, known for being the deepest point on Earth, is located in the Pacific Ocean.
Specifically, the Challenger Deep within the Mariana Trench holds this record, with a depth of approximately 11,000 meters (about 6.8 miles).
This trench is situated in the western part of the Pacific Ocean near the Philippines, far deeper than the average ocean depth of 4267 meters (14,000 feet).