Corkscrew Uksip

The corkscrew uksip split from its ancestor to inhabit the South Tundra and the southern waters. It has grown twice the size of its ancestor, evolved a slightly different body shape but its main adaptation is in its filter-tooth. Around its hollow tooth the corkscrew uksip evolved a unique muscle able to rotate and inflate in a circular movement, built from a set of half circle muscles that push each other in order to create such a movement. By pumping air or water they create enough pressure in their hollow tooth to create the force needed. Its tooth is also shaped in a form of a corkscrew. This together enables it to dig into the thick icy layer and filter-feed through it. Also when it uses enough force the corkscrew uksip is able to penetrate through that layer and swim into the freezing ocean and feed there only to dig its way back later. It evolved boney bumps on its head in order to make the penetration easier. For this amphibious life-style it has also re-evolved some of its ancestors’ breathing mechanisms as well as its skin breathing. They still live in brood-colonies mostly near the lakes and coast where they raise their young together. They are less loyal to a specific colony and often switch colonies according to their current location. Males tend to be more wanderers while females stay close to their original brood-colony to raise their own young in the future. In order to move from salty waters to the lakes they have evolved an improved urination system. In order to sustain the cold they evolved a fatty layer.