A whole new world is opening up to me! When that pod imploded on its way to the Titanic, I did a bunch of reading and saw an illustration of the different depth levels of the ocean, and where different things can be found. As deep as it is, the Titanic is nowhere - absolutely nowhere - near the bottom. Amazing!
Technology recently found a trench near the Marianas Trench which is actually deeper than the Marianas. ;-)