There is a world out there in the cosmos, in some far off universe, where things get very weird, very fast. A planet with tropical polar regions and a frozen equator. It is a far off and fantastic land populated with the evolved descendants of a select few Earth animals that have been sporadically introduced through unknown means over the past few hundred million years, including frogs, rodents, dinosaurs and crustaceans. It is a massive world, with a circumference a little over twice that of Earth's and almost five times the surface area, but gravity upon its surface is never any higher than upon Earth.
This world seems to break the laws of physics and could not exist in our universe. Nobody knows how or why the planet exists as it does. What we do know is that life, introduced to this fantastical environment from our world, has adapted to it in marvelous ways.
The purpose of this project is not to explain how this world could exist, but rather to document how life would evolve in such a unique environment if it did. It is a world divided into two divergent hemispheres by an almost impenetrable wall of sea ice and glaciation stretching miles high, which has broken down only a handful of times in its history. It supports jungles of trees, some taller than the highest man-made structures, through which long-armed frogs swing, and living monolithic crustaceans that sport forests on their own backs. Predatory dinosaur-hunting rodents stalk over sweeping savannas while the seas swims in equal measure with primordial monsters and endearing wide-eyed creatures which would fit well into a children's storybook. Flying dinosaurs with fifty-foot wingspans soar the skies in search of prey below, and higher above them still live bloated beasts, bigger than anything below, which "swim" through the more distant heavens of an endemic biome unique to Sheatheria, known as the sky sea.
This is Sheatheria, a wild world like none you've ever seen before.
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