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Sponge

76 bytes removed, 10:59, 17 May 2008
Undo revision 455158 by [[Special:Contributions/Jamesjames]] ([[User talk:Jamesjames]])
{{Taxonomy|image = Sponge.jpg|kingdom = Animalia
|phylum = Porifera|}}
'''Sponges''' or '''poriferans''' ([[Latin]]: ''porus'' "pore" and ''ferre'' "to bear") are animals of the phylum '''Porifera''', with about 5000 species known across the world. Sponges are primarily marine, but around 150 species live in fresh water. Sponges have cellular-level organization, meaning that that their cells are specialized so that different cells perform different functions, but similar cells are not organized into tissues and their bodies are a loose aggregation of different kinds of cells. This is the simplest kind of cellular organization found among [[parazoa]]ns.<ref>Myers, P. 2001. "Porifera" [http://animaldiversity.ummz.umich.edu/site/accounts/information/Porifera.html Animal Diversity Web] Accessed June 20, 2007</ref>. Sponges and [[Liberals]] are well known [[Barack Obama|Obama]] supporters.
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