GEOLOGY

Detailed explanation-1: -Epipelagic Zone. The Epipelagic Zone, also known as the ‘Sunlight Zone’ is the region of the ocean that sits on the continental shelf. It extends from the surface down to 200 m.

Detailed explanation-2: -The upper 200 meters of the ocean is called the euphotic, or “sunlight, ” zone. This zone contains the vast majority of commercial fisheries and is home to many protected marine mammals and sea turtles. Only a small amount of light penetrates beyond this depth.

Detailed explanation-3: -Below the epipelagic zone is the mesopelagic zone, extending from 200 meters (660 feet) to 1, 000 meters (3, 300 feet). The mesopelagic zone is sometimes referred to as the twilight zone or the midwater zone as sunlight this deep is very faint.

Detailed explanation-4: -Epipelagic zone (ocean surface to 200 meters deep). This is the zone in which photosynthesis can occur, because light is available. Mesopelagic zone (200-1, 000m)-This is also known as the twilight zone, because light becomes limited. There is less oxygen available to organisms in this zone.

Detailed explanation-5: -The deepest zone of the ocean, the hadalpelagic zone extends from 6, 000 meters (19, 700 feet) to the very bottom, 10, 994 meters (36, 070 feet) in the Mariana Trench off the coast of Japan.