Below the ocean’s surface is a mysterious world that accounts for over 95 percent of Earth’s living space—it could hide 20 Washington Monuments stacked on top of each other. But the deep sea remains largely unexplored. As you dive down through this vast living space you notice that light starts fading rapidly.

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. [1] [2] Conditions within the deep sea are a combination of low …

The deep sea is where the ocean becomes deeper. It is also the point of transition from continental shelves to slopes. [1] Despite the extreme pressure, organisms called deep sea fish can survive there. For example, the anglerfish can produce its own light source called an esca. Some animals can thrive by feeding on marine snow. [2]

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 Mariana Trench at the depth of 6,000 meters (3.7 miles).

With its great currents slowly moving enormous quantities of water around our planet, the deep sea is the engine that controls the overall climate—but we don’t yet understand enough about how this engine works.

Did you know that corals not only grow in coastal reefs but in the deep ocean as well? This overview dives into everything to know about deep-sea corals.

Seamounts and canyons, deep-sea corals and sponges, chemosynthetic features like hydrothermal vents and cold seeps, and the water column are just some examples of the features — both geological and biological — that provide habitat for …

The deep sea is the largest habitat on Earth. Despite the low temperatures, extreme ambient pressures, absence of sunlight and low resource availability, it supports a rich abundance of life in an array of unique ecosystems.

As it turns out, not very much. 95% of the ocean remains unexplored, most of which is considered the deep ocean. But what exactly is the deep ocean? The first 200 meters of the ocean are the open ocean. Much of the marine life we know of lives here, where there is light.

The deep sea encompasses areas such as the continental slope (Achibenthal, bathyal: in 500 to 2,000 m depth), the deep sea mounts (Abyssal: in 2,000 to 6,000 metres depth) and the deep sea trenches (Hadal: in 6,000 to 11,000 m depth).