The Hadal zone is the deepest part of the ocean, generally defined as the regions of the ocean that lie below 6,000 meters (about 19,685 feet), reaching down to the ocean floor of the deepest trenches, such as the Mariana Trench. This zone is characterized by extreme conditions, including immense pressure, near-freezing temperatures, and complete darkness. Organisms that inhabit the Hadal zone, known as hadal organisms, have adapted to these extreme conditions.
New to topics? Read the docs here!