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Atlantic Ocean, body of salt water covering about one-fifth of Earth’s surface and separating the continents of Europe and Africa to the east from those of North and South America to the west. Its name, derived from Greek mythology, means the ‘Sea of A
1. The Twilight Zone Just below 100 metres, the ocean midwater becomes a world of gloom, where dazzling bioluminescent drifters and fish of bright silver shimmer in the twilight expanse. WATCH NOW 3. The Abyssal Plain Beneath the crushing pressure of kilometres of water lies a great sea of ...
fish, plankton etc. It is about 600 ft deep. The disphotic layer, or the twilight zone, runs from 600 ft to 3000 ft and is home to bioluminescent organisms. It houses starfish, sponges, jellyfish anemones etc.
Even more astounding is the tiny benthic octopus (Vulcanoctopus hydrothermalis) living at the abyssal depths of 2,000 metres (6,600 feet). Interesting Fact: Out of all octopus species, only the cirrate (ear-like fins) Dumbo octopus (Grimpoteuthis) has been photographed within the oceanic ...
Indian Ocean, body of salt water covering about one-fifth of the world ocean area. It is the smallest, youngest, and physically most complex of the world’s three major oceans (Pacific, Atlantic, and Indian). It stretches for more than 6,200 miles (10,00
On theabyssal plains, where sediments accumulate slowly, chemical and biological processes lead to the formation of metal-bearing coatings around objects such as the ear bones of fishes. Thenodulesso formed contain manganese, iron, nickel, copper, cobalt, and traces of other metals such as platinu...
abyssal zone bathyal zone bottom water littoral zone halocline See all related content marine ecosystem, complex of living organisms in the oceanenvironment. Marinewaterscover two-thirds of the surface of theEarth. In some places theoceanis deeper thanMount Everestis high; for example, theMariana Tr...
000 metres and includes the descendingcontinental slopeand rise. Theabyssal zone(between 4,000 and 6,000 metres) represents a substantial portion of the oceans. The deepest region of the oceans (greater than 6,000 metres) is thehadal zoneof the deep-sea trenches. Sediments of the deep sea ...
000 metres and includes the descendingcontinental slopeand rise. Theabyssal zone(between 4,000 and 6,000 metres) represents a substantial portion of the oceans. The deepest region of the oceans (greater than 6,000 metres) is thehadal zoneof the deep-sea trenches. Sediments of the deep sea ...