The Abyssal Zone is found in the extreme lower Pelagic zone of the ocean. The start of the Abyssal zone is at 4,000 meters or 13,000 feet all the way to a depth of 6,000 meters or 20,000 feet. This zone is in the lower Midnight Zone in the lower Bathypelagic Zone. The most common form of the Abyssal Zone is the Marianas Trench.