This follows on from last Monday’s Awesome. I found a cool interactive graphic on the BBC news website.
You can scroll down and see what life is like at increasing depth and pressure. There are little photos and videos of things at different depths, including some pressure-tests to demonstrate what happens at high pressure. Here’s a screenshot:
At the very bottom of the graphic, in the Challenger Deep (deepest part of the Mariana Trench) there is a video of Don Walsh, one of only two people to have gone to the very bottom. He travelled the 11km to the bottom of the ocean in a little submarine in the 1960s. It’s surprising that no-one else has gone there since.
Go to the interactive graphic here.