The<unk> s  or poriferans (from Latin porus "pore" and ferre "to bear") are animals of the phylum Porifera.  Porifera translates to "Pore-bearer". They are primitive, sessile, mostly marine, water dwelling, filter feeders that pump water through their bodies to filter out particles of food matter.<unk> s represent the simplest of animals. With no true tissues (parazoa), they lack muscles, nerves, and internal organs. Their similarity to colonial choanoflagellates shows the probable evolutionary jump from unicellular to multicellular organisms. There are over 5,000 modern species of<unk> s known, and they can be found attached to surfaces anywhere from the intertidal zone to as deep as 8,500 m (29,000 feet) or further. Though the fossil record of<unk> s dates back to the Neoproterozoic Era, new species are still commonly discovered.
Sponge
Wonder 
Boil
Wart
Heave
Inclusions
Niter
Bandage