PORIFERA
Porifera live mostly in marine environments.. These multicellular organisms technically have no organs, muscles, digestive track or brains. There are three classes within this Phylum, the Hexactinellida, or glass sponges, the Calcarea, or calcareous sponges, the Demospongiae, or demosponges. There are more than 5,000 different species of Porifera, including Gelliodes Fibrosa, Suberites Zeteki, and Zygomycale Parishii. Members of the Porfifera phylum have no nervous system, therefore there ar eno other organism tabs listed on this site. They have no brain and no nervous system, not even a simple nerve net. They rely on water intake and out put for oxygen intake, waste removal and digestion. They have no reactions towards their physical environments except some species that move across the ocean floor at speeds up to four millimeters per day