WORKS CITED

Bird, Jonathan. "Sponges: The Wierd Wonders of the Sea". Oceanic Research Group.
http://www.oceanicresearch.org/sponges.html

Collins, Allen G., and Ben Waggoner. "General Morphology of Periforans". UCMP.
http://www.ucmp.berkeley.edu/porifera/poriferamm.html

Davis, Seonald. “Scientific Observation and Analysis of the Sponge (Porifera)”. Tree of Life Web Project.
http://www.tolweb.org/treehouses/?treehouse_id=3315

Dolphin, W.D., and others. "Phylum Porifera". Biology at Iowa State University.
http://www.biology.iastate.edu/Courses/201L/Porif/%20Porifindx.htm

Fauvre, Emmanuel. "FAQ: History of the Sponge". Clipper Mill.
http://www.clippermill.com/faq.html

Hilma. “Sponges”. Portsdown Hill.
http://www.bbm.me.uk/portsdown/PH_321_Sponge.htm

Myers, Phil. "Phylum Porifera - Sponges". Animal Diversity Web. http://www.earthlife.net/inverts/porifera.html

Ramel, G. "The Phylum Porifera". Earth Life.
http://www.earthlife.net/inverts/porifera.html

"Sponges". Enchanted Learning.
http://www.enchantedlearning.com/subjects/invertebrates/sponge/

"Sponges - Phylum Porifera". Geocities.
http://www.geocities.com/sciencejanetc/7th_8th_grade/animal_kingdom/sponges.html

Stevely, John and Don Sweat. Sponge History. University of Florida: IFAS Extension.
http://edis.ifas.ufl.edu/SG045