About three-fourths of the area covered by ocean is deep, permanently dark, and cold. This is the deep sea. Oceanographers divide the majority of the ocean midwater into five broad zones. …

The deep sea is broadly defined as the ocean depth where light begins to fade, at an approximate depth of 200 m (660 ft) or the point of transition from continental shelves to continental slopes. …

The deep ocean is generally defined as the depth at which light begins to dwindle, typically around 200 meters (656 feet). Remotely operated vehicle Deep Discoverer explores the …

Commonly considered to be the waters below 200 meters (656 feet), the deep ocean is a place where it is dark, food is scarce, and temperatures and pressures are extreme. Life is hard …

How deep is the ocean? At 36,070 feet (10,994 meters) below sea level, Challenger Deep in the Pacific Ocean’s Mariana Trench is the ocean’s deepest known point. Comprehending just how …

The average depth of the ocean is about 3,682 meters (12,080 feet). The lowest ocean depth on Earth is called the Challenger Deep and is located beneath the western Pacific Ocean in the …

The deep sea—that part of the ocean that is perpetually dark—is 103 million square miles in area. However, despite a dramatic increase in exploration in recent decades, we still know very little …