Geography and Evolution
It seems likely that Darwin IV was covered with large oceans a few million years ago, just like Earth. But because of important climatic changes, the oceans evaporated and most of the ocean water became part of the atmosphere of the planet. The continents are now mountain chains and plateaus, while the ocean floor has become a large, open plain of deserts and savannah. Thus, most of the creatures who now inhabit Darwin IV are descendants of land-dwelling animals
The dense atmosphere is full of clouds and meteorologic activity and the plains sometimes resemble "weather oceans". Most of the water is found in the atmosphere, but there are also millions of tons of frozen water in the regions of the poles, and big lakes and rivers where the 'pocket-forests' reside.
In the deepest part of the evaporated ocean basins, there is a "lake", the Amoebic Sea, composed of tons of microscopic creatures who have evolved to conserve the last of the remaining sea water inside their bodies in order to survive.
The continental plates are still moving, and the areas where they collide are full of earthquakes and volcanic activity, phenomena that remain mostly unseen on Earth since there they occur under the surface of the oceans.
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