Final answer:
The deepest part of the ocean is called the Marianas Trench, located in the western Pacific Ocean. It is found in the abyssal zone, at depths of 4000 meters or greater.
Step-by-step explanation:
The deepest part of the ocean is called the Marianas Trench, which is located in the western Pacific Ocean. It is the deepest part of the ocean at a depth of about 11,000 meters or 6.8 miles. This trench is found in the abyssal zone, which is at depths of 4000 meters or greater.