1. “About Jellyfish.” 1998-2000 Cnidarian Research Institute. Marine Aquarium Society. 11 May 2000 chttp://www.masla.com/jellyfishbasics.htmx
2. The Academy of Natural Sciences. 1998-2006. The Academy of Natural Sciences. 5 Apr. 2006 <http://www.acnatsci.org/>.
3. Alexander, W. B. Birds of the Ocean. 1928. Rev. ed. New York: Putnam's, 1963.
4. Allen, Robert Porter. Birds of the Caribbean. New York: Viking, 1961.
5. “American Peregrine Falcon.” 1996. American Museum of Natural History. 19 Feb. 2006 <http://www.amnh.org/Exhibition/Expedition/Endangered/falcon/falcon.html>.