Although we have discovered thousands of exoplanets in the last decade we know of only one planet with life: Earth. So, as a marine biologist I based life on Thalassa using the scientific foundations and evolutionary history of what we know about primitive life on Earth, with some added twists of course. Since we don’t know what life might look like on another planet, it is possible some alien life it will be similar to earth’s life in overall appearance and form due to the constraints of an organism’s functional anatomy, physiology, and the cellular and genetic foundations