Lost in the desert - I love water, but I fear deep, open water. The idea that 500 meters of water are under you and you dont know what happens below, is a horror. On a ship its fine, but not as a swimmer
I think japan Iis way more fascinating, even of china is bigger, with more differences in its culture
To the ocean's ground - I am just as terrified as you are of deep open water, but I think I would be just as scared of going to space. Both ideas are terrible to me, but the ocean floor sounds more interesting than the moon (just a big rock) so I'd rather go there I guess.