Sonar mapping of the Challenger Deep by the DSSV Pressure Drop
36,070 feet below sea level! This is how deep the deepest point in the Earth's seabed is. Compare that number with the fact that 12,080 feet is the average depth of the ocean. To make it simpler, compare it to the fact that Titanic's wreckage lies at about 12,500 feet underwater! If that brings back memories of the epic Hollywood movie, you must have understood how deep the deepest point of the ocean would be.