Works+Cited

[] [|http://www.liveaquaria.com/product/prod_display.cfm?c=497+502+711&pcatid=711] [|http://en.wikipedia.org/wiki/Sea_urchin] [|http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/artjul00/urchin1.html] [|http://www.starfish.ch/reef/echinoderms.html] [|http://science.jrank.org/pages/1038/Brittle-Star.html] [|http://oceanlink.island.net/biodiversity/seastars/seastars.html] [|http://animals.nationalgeographic.com/animals/invertebrates/starfish/] [|http://www.wetwebmedia.com/seastars.htm] [|http://www.youtube.com/watch?v=aCxKFc3XtJs] [|http://www.youtube.com/watch?v=GCpRLZmhKJY] [|http://animaldiversity.ummz.umich.edu/site/accounts/pictures/Echinodermata.html] [|http://tolweb.org/Echinodermata] [|http://www.fossilmuseum.net/Tree_of_Life/Phylum-Echinodermata.htm]