Frans Block wondered what the world would look like if water and land were flipped. The deepest spots in the ocean become the highest mountains and the highest mountains become the deepest part of the sea:
It is an extraordinary planet, this inverted world. It has more than twice as much land available as our own Earth. Which does not mean, however, that twice as many people can live there, because only a small part of this surface is green. After all, the rain must come from somewhere.
Particularly Pacifica, almost completely surrounded by high mountain ranges, is one big desert. Great for the fans of desolate stony plains, and I count myself among them. But not very suitable for agriculture.