I.The Basics
A.Place in the Ecosystem
B.The Behavior
II.Benefits they provide in the ecosystem
III.Interactions with other organisms
A.Humans
B.Other Organims
http://www.enchantedlearning.com/subjects/sharks/rays/Mantaprintout.shtml
http://www.aqua.org/
http://www.meandmephoto.com/Underwater/Rays.html
http://scandinavian-divers.com/en/similan2.shtml
http://www.mantapacific.com/
http://www.his.com/~graeme/rays.html
http://www.smithsonianmag.si.edu/smithsonian/issues98/jul98/devilfish.html
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