200-metre

Benthic Zone. The bottom region of oceans and bodies of fresh water.

The Abyssopelagic Zone (or abyssal zone) extends from 13,100 feet (4,000 meters) to 19,700 feet (6,000 meters). It is the pitch-black bottom layer of the ocean. The name (abyss) comes from a Greek word meaning “no bottom” because they thought the ocean was bottomless.

Aside from the above, the zone supports a wide range of fish species including bluefin tuna, herring, capelin, mackerel, and many more species. Larger species include blue whales, humpback whales, whale sharks, and others. Whale sharks, which are the largest fish species on earth, only eat plankton.

The next deepest zone is called the bathypelagic zone (or lower open ocean). This zone starts at the bottom of the mesopelagic and stretches down to 4000 m (13,000 feet). The bathypelagic is much larger than the mesopelagic and 15 times the size of the epipelagic. It is the largest ecosystem on earth.

The pelagic region is divided into three zones. The top zone is the euphotic or sunlit zone. This is the ocean zone that sunlight penetrates. Because this zone gets sunlight, photosynthesis can occur and plants can grow here.

Clownfish are small, brightly coloured fish that live in shallow lagoons or sheltered reefs. They are found in the warmer waters of the Pacific Ocean and Indian Ocean….Summary.

An estimated 50-80% of all life on earth is found under the ocean surface and the oceans contain 99% of the living space on the planet. Less than 10% of that space has been explored by humans. 85% of the area and 90% of the volume constitute the dark, cold environment we call the deep sea.

Sunlit Zone

Animals of the Bathypelagic Zone At this depth and pressure, the animals most commonly found are fish, mollusks, crustaceans, and jellyfish. Sperm whales will hunt at these depths on occasion to prey on giant squid.

Scientists now estimate that 80 percent of Earth’s species live on land, 15 percent in the ocean, and the remaining 5 percent in freshwater.