PORIFERA - SCHWÄMME - SPONGES
		Sponges(Porifera) Sponges(Porifera) can be disguised easily from sea-squirts(Tunicata), for they posses very many pores over their hole surface. Many sponges have little needles of lime, which sustain their tissue, and with which different species can be declared. For that reason, all here shown species must be seen as "possible" species. Keeping sponges in aquaria is possible, if they can get enough plancton-food or detritus. Some sponges share symbiotic lifestyles with other organisms like hermit-crabs and spider-crabs, for example. On the one hand-side it may be, that the sponges settle on other organisms(like the sulfure sponge or the horse-sponge, for example), on the other hand-side it also may be, that they are settled by other animals, if they can offer enough biosphere for them(for little crabs, for example).