The Hunted;
The Arctic Lemming developed a thick layer of fat, white fur, flippers, claws, and extremely rapid reproduction. With all of this, the Lemming survived on fish, due to a lack of surface vegetation. The main fish that the Lemming ate was the Smiley Fish, which fed greatly on a species of Arctic algae that thrived in these waters. The fish adapted to the cold with an internal heating system that used photosynthesis, thus creating photosynthesizing fish, though, these fish only used photosynthesis for warmth. The Algae adapted to flourish in these cold waters by becoming much more conservative, reproducing faster through spores, and being able to migrate to where the sunlight was strongest fairly quickly. Thus maintaining a steady population of remaining animals. Once the planet Arda began to warm again, all species thrived greatly and flourished due to the adaptations that allowed the plant and animal species to explode in population size. Plant life will return, and will thrive due to the fact that the native animals are no longer adapted and able to eat any plant species.