Tour the ocean depths
“The vessel is expected to be able to descend more than 21,000 feet into the ocean. Alvin dives to just short of 15,000 feet. The new capability will still remain short of the deepest spot in the oceans, more than 36,000 feet in the Mariana Trench.”
Sounds very cool to me. I’d love to do this. Of course I’d need to know that I had access to the toilet. At that depth you can’t just pop out and find a bush.