The deepest point is the Mariana Trench

The deepest part of the ocean is the Mariana Trench, which is about 11km deep at the deepest point found so far. For reference, you could put Mount Everest in there and still have around 2km to spare! It's very dark down there and the pressure is intense - it's 8 tons per square inch, which means if you were down there it would be like trying to hold up 50 jumbo jets. So, if you wanted to explore it you'd need a powerful machine with very bright lights. And that's exactly what the Deepsea Challenger did! This submersible vehicle reached the furthest anyone has ever gone, almost to the bottom, piloted by James Cameron. That's right, James Cameron of Titanic and Avatar fame! He's a big fan of ocean exploration!