Animals porous, contains a form sort of a tube or vase-like body with a surface of the pores stuffed with a awfully small-called ostium (plural: ostia). Ostia contains a channel that connects with the body cavity (spongocoel). At the tip of the body there's a hole known as oskulum. Channel ostia - spongocoel - oskulum is a channel of water that bring food. Habitat on the seabed that's not too deep, however there are some who live within the water laughing.
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