Millifoi

The millifoi replaced its ancestor, the centifoi, and has been successful enough to spread to Razo Volcanic. It still lives on the banks of Ittiz River, but no longer live inside the river because land-based adaptions and competition from its relative, the filtering fee. The most noticeable difference in the millifoi is that individual foi are no longer large, and approach the size of a normal multicellular organism's cells. The millifoi now has many different types of specialized fee, instead of just the two layers of inside and outside fee of its ancestor. Fee with abnormally large eyes now grow in bands over the foi, three vertical and five horizontal, and have the ability to transfer weak electrical signals to each other and muscle cells to coordinate movement. The thing that distinguishes the millifoi from its ancestor, though, is its complex digestive system.

The millifoi has grown to thick to simply absorb its food through the combined cell wall, so it has evolved specialized openings in its outer layer that function as primitive mouths. They usually appear as thin slits, but when they are pressed against the ground they open suddenly, pulling any small or soft matter into its mouth, as well as air. Inside the mouth, a closed passageway that, after debris has entered the mouth, convulses in a wave-like motion, pulling its food and air into the central chamber of the organism. The air quickly floats to the top, where a loose membrane several foi thick seperates the oxygen from the other gases, mixes the oxygen back into the water, and lets the carbon dioxide and other gases pass through, where they are released through the set of mouths currently at the top of the organism.

The organic matter, however, diffuses into the digestive-acid filled water, where it slowly breaks down into more useable particles. The inner walls of the multifoi will occasionally contract and form pockets, where the food and oxygen is filtered out and sent into a system of arteries that form a primitive vascular system. The inner wall then takes in toxins from the blood stream, and holds it intil a transport foi arrives. Transport fee are specialized cells that resemble its ancient ancestor, the carpet foi, except without eyes. Much larger than regular millifoi cells, these crawl in orbits around the inner wall. When one crawls over a pocket filled with toxins, the pocket releases its toxins, which the foi absorbs through endocytosis. The transport foi accumulates many vacuole this way, which merge in the center of the foi, creating a large, single, vacuole. When the foi reaches the end of the chamber, it will release the toxins into one of the many microscopic passageways that line the ends of the multifoi, releasing it as a semi-fluid waste on the outside.