What is the deepest Ocean in the World and how deep is it?
477105
The Trans-Atlantic Ocean, 50234 feet at max.
286838
The Mariana Trench (or Marianas Trench) is the deepest known submarine trench, and the deepest location in the Earth's crust itself. It is located in the floor of the western North Pacific Ocean, to the east of the Mariana Islands at 11°21′N 142°12′E, which is near Guam. The trench is the boundary where two tectonic plates meet, a subduction zone where the Pacific Plate is being subducted under the Philippine Plate. The bottom of the trench is further below sea level than Mount Everest is above sea level.\n\nThe trench has a maximum depth of 10,911 m (35,798 feet) below sea level. Taking into account its latitude and the Earth's equatorial bulge, this puts it at 6,366.4 km from the centre of the Earth. The Arctic Ocean, on the other hand, is 4-4.5 km deep, which would put its floor at ~6,352.8 km from the Earth's centre, 13.6 km closer.\n\nIt was first surveyed in 1951 by the British navy vessel, Challenger II, which gave its name to the deepest part of the trench, the Challenger Deep. Using echo sounding, the Challenger II measured a depth of 5,960 fathoms (10,900 m) at 11°19′N 142°15′E. This sounding was repeatedly made using earphones to hear the return of the signal as the stylus passed across the graduated depth scale, whilst the timing of the speed of the echo-sounding machine, a necessary part of the process, was made with a hand held stopwatch. For these reasons it was considered prudent to subtract one scale division (of 20 fm) when officially reporting a new greatest depth of 5,940 fm (10,863 m).\n\nIn 1957, the Russian vessel Vityaz reported a depth of 11,034 m (36,201 ft), dubbed the Mariana Hollow; this measurement has never been replicated and is not considered accurate. In 1962 the M.V. Spencer F. Baird recorded a greatest depth of 10,915 m (35,810 ft). In 1984 the Japanese sent the Takuyo, a highly specialized survey vessel out to the Mariana Trench and collected data using a narrow, multi-beam echo sounder; they reported a maximum depth of 11,040.4 m1 (this is also reported as 10,920±10 m 2). The most accurate measurement on record was taken by another Japanese probe, Kaiko, on March 24, 1995: 10,911 m (35,798 ft) 3.\n\n \nJanuary 23, 1960: Just before the diveIn an unprecedented dive, the U.S. Navy bathyscaphe Trieste reached the bottom at 1:06 pm on January 23, 1960 with U.S. Navy Lt. Don Walsh and Jacques Piccard. Iron shot was used for ballast, with gasoline for buoyancy. The onboard systems indicated a depth of 37,800 ft (11,521 m), but this was later revised to 35,813 ft (10,916 m). At the bottom Walsh and Piccard were surprised to discover soles or flounder about one foot (30 cm) long, as well as shrimp. According to Piccard, "The bottom appeared light and clear, a waste of firm diatomaceous ooze".\n\nAt the bottom of the Mariana Trench, water exerts a pressure of 1086 bar (108.6 MPa or 15,751 psi), over 1000 times the standard atmospheric pressure at sea level.
57343
The deepest lake is lake Baikal. In east Siberia, Russia.\nThe Olkhon Crevice, the deepest point of the lake, has a depht of 5,875 ft., of wich 3,875 are below sea level.\n...........................\nThe biggest lake, is the Caspian Sea, an island sea wich covers parts of Azerbaijan, Russia,etc.\nIt's 760 miles long,with a surface area of 143,560 miles and an estimated volume of 21,500 cubic miles.\n..............................\nI also heard that the lake Tangyanika in central africa is the bigguest....
294817
the deepest ocean so far known is the pacific ocean. the mariana trench is the deepest point in the ocean that is roughly 10,000 metres depth. isn't that amazing!
364280
Well, the Mariannas Trench in the Pacific is generally acknowledged as the deepest point -- the Challenger Deep is 35,838 feet below the surface!  In metric, that's 10,923 meters below mean sea level!
193906
There are only 5 oceans:\nAtlantic\nPacific\nIndian\nArctic\nSouthern\n\nOcean Area (square miles) Average Depth (ft) Deepest depth (ft) \nPacific Ocean 64,186,000 15,215 Mariana Trench, 36,200 ft deep \nAtlantic Ocean 33,420,000 12,881 Puerto Rico Trench, 28,231 ft deep \nIndian Ocean 28,350,000 13,002 Java Trench, 25,344 ft deep \nSouthern Ocean 7,848,300 sq. miles (20.327 million sq km )  13,100 - 16,400 ft deep (4,000 to 5,000 meters) the southern end of the South Sandwich Trench, 23,736 ft (7,235 m) deep \nArctic Ocean 5,106,000 3,953 Eurasia Basin, 17,881 ft deep \n\n\nWhile some scientists claim there are five oceans, others claim there are only four or even three oceans.
389447
There are indeed flatfish and shrimp in the deepest part of the ocean.  What kind of flatfish is, to my knowledge, unknown.\n\nThe Goblin shark reaches the bottom of the abysal planes, at about 1200 meters.  I don't know if any sharks have been found in the deep trenches, but it wouldn't surprise me.
278999
Pacific Ocean - The deepest known point on Earth is at the bottom of the Mariana Trench, a depression in the floor of the western Pacific Ocean, just east of the Mariana Islands. \n\nThe Mariana Trench is 1,554 miles long and averages 44 miles wide. Within it, about 210 miles southwest of Guam, lies the deepest known point on Earth. Named the “Challenger Deep” for the British survey ship Challenger II that located it in 1951, this underwater gorge plunges to a depth of nearly 7 miles! It is deeper than Mt. Everest is tall.
27693
The deepest point is 560 feet (170 meters).  By the way, you're in WAY the wrong catagory.
434546
The Mariana Trench (or Marianas Trench) is the deepest known submarine trench (35,798 feet), and the deepest location in the Earth's crust itself. It is located in the floor of the western North Pacific Ocean, to the east of the Mariana Islands
1152082
10,916 meters (35,814 feet), to Challenger Deep in the Marianas trench, which is the deepest known part of the Earth's oceans.  The Marianas trench is in the western north Pacific Ocean.  \n\nSee sources.
24217
There are five oceans: Pacific, Atlantic, Arctic, Indian, and Southern.
598505
The Pacific Ocean\naverage depth -- 12,925 feet, or almost 2 1/2 miles. The Pacific also has the largest known maximum depth, in the famous Mariana Trench; this maximum depth is 35,840 feet, or a little over 6 3/4 miles. (That's\ndeep!)
824678
I think you are referring to *trenches*, or more specifically *submarine trenches*.  For example, the Mariana Trench is a submarine trench located in the Pacific Ocean, just east of the Mariana Islands.   \n\nAs you probably already know, it is the deepest part of the earth's oceans, and the deepest location of the earth itself.  It was created by ocean-to-ocean subduction, a phenomena in which a plate topped by oceanic crust is subducted beneath another plate topped by oceanic crust.\n\nCounting the distance from the bottom of the trench to the top of Mt. Lam Lam on the neighboring island of Guam would make Mt. Lam Lam taller than Mt. Everest.  Inhabitants of Guam like to call Mt. Lam Lam the tallest mountain in the world (tongue in cheek, of course).
55429
The Marianas Trench in the Pacific Ocean is the deepest known part of the ocean, at 35,798.6 ft
949691
5 oceans : from the largest to the smallest: the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the Southern Ocean, and the Arctic Ocean.
1126079
The Red Sea is not the lowest point on earth.  However, I do believe that you are thinking of the Dead Sea!  The Dead Sea is one of the lowest points on earth, and water that flows into it does not flow back out (it is called the dead see because it is so salty that no living thing can survive in it.  It's so salty that it actually makes it easier to float!)  The actual lowest point on earth is Mariana's trench, which is in the pacific ocean near Southeast Asia.  I believe that the depth is around 28000 feet (the last time I knew, no submarine had ever touched the bottom, but they did come to within about 3 feet of the bottom).  I hope that that sufficiently answered your question.