After the initial freakout of the blob, it was understood that this yellow organism was a type of slime mold. It is a brainless organism that has the ability to be decisive and solve mazes. It is not a fungus or an animal or any characterization from our present understanding of the animal kingdom. It is called physarum and is a quite common organism. It is one giant cell with many nuclei within. Fluids can flow throughout the body of this organism as it does not have any barriers between the walls of this organism. It uses peristalsis type of rhythmic contractions that moves fluid and information across the body. They are not sure which signalling molecule is used to pass the information around. It has a ton of sexes.