Long ago a certain aquatic frog had an extra slimey adaptation, this Adaptation allowed these frogs to move from an aquatic environment to a terrestrial environment. Over time they began to lose their inside muscle tissue, skeleton and gained larger eyes to see through their mucous membrane over each generation till it evolved into the modern slime.




Above is an Ai created reconstruction of what this Fossil Frog may have looked like in its natural environment.
Due to still having a skeletal structure it is theorized that Limnonectes Slimeatica could still swim