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Porifera
Sponges are characterized by the possession of a feeding system unique among animals. Poriferans don't have mouths; instead, they have tiny pores in their outer walls through which water is drawn. Cells in the sponge walls filter goodies from the water as the water is pumped through the body and out other larger openings. The flow of water through the sponge is unidirectional, driven by the beating of flagella which line the surface of chambers connected by a series of canals. Sponge cells perform a variety of bodily functions and appear to be more independent of each other than are the cells of other animals.
Moho Cay, Belize
Natural Sea Sponges possess remarkable powers of regeneration, they have the ability to re-grow lost parts and pieces broken off by water currents, and have the ability to settle in another location and re-grow into a clone of the parent sponge. When sponges are harvested, those collecting the sponges are careful to ensure that the base (roots) of the sponge remains in tact so as the sponge has the ability to regenerate and re-grow back to its original form.
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