what is the deepest part of the ocean?

abyss

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.

The 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.

It 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).

The deepest part of the ocean is the Marianas Trench, in the Pacific Ocean, that it is 11,033 meters (36,201 feet) below sea level and the deepest part of the Marianas trench is named Vitjazdepth.

The deepest part of the ocean is the Mariana Trench somwhere in the middle of the Pacific.

The Marianas Trench.

The part which has the longest measurement of water from the bottom to the top of the area of which it is measured.

mariana's trench. it's where i hid some evidence that would convict me.

i'm not sure, but I think its the Mariana trench (don't know if I spelled it right)

the middle, the further you go the deeper it gets

the balthic zone...?