The ocean deeps are the deepest part of the ocean.
They are long, narrow, steep sided and flat-floored depressions on the ocean floor.
They are generally called submarine trenches.
These trenches are not always located in the middle of the ocean basins, as may be generally expected but are situated very close or parallel to the continents bordered by Fold Mountains.
They are usually found adjacent to the areas of volcanic and earthquake activity.
Great earthquakes and tsunamis are born in them.
They occur in all the major oceans.
The Pacific Ocean has the largest number of trenches.
The Mariana Trench in ‘the Pacific Ocean is the deepest known part of the oceans.
This trench is so deep that if we place the highest mountain of the world – the Mt. Everest in it, even this shall have a few kilometers of water above its summit.