Killer Whale:
http://www.seaworld.org/infobooks/KillerWhale/sciclasskw.html
"Integrated Taxonomic Information System"
http://animals.jrank.org/pages/3109/Whales-Dolphins-Porpoises-Cetacea-PHYSICAL-CHARACTERISTICS.html
http://animals.jrank.org/pages/3109/Whales-Dolphins-Porpoises-Cetacea-PHYSICAL-CHARACTERISTICS.html
http://www.seaworld.org/animal-info/info-books/killer-whale/physical-characteristics.htm#top
Herman, Louis M., ed. Cetacean Behavior: Mechanisms and Functions. New York: John Wiley and Sons, 1980.
Great White Shark:
http://www.indianchild.com/great_white_shark.htm
http://www.enchantedlearning.com/subjects/sharks/species/Greatwhite.shtml
http://web.ncf.ca/bz050/wsphysio.html
http://www.mesa.edu.au/seaweek2005/pdf_senior/is06.pdf
http://dsc.discovery.com/sharks/great-white-sharks/images/great-white-thumb.jpg
Giant Octopus:
http://en.wikipedia.org/wiki/Giant_octopus#Type_species
http://nationalzoo.si.edu/Animals/Invertebrates/Facts/cephalopods/FactSheets/Pacificoctopus.cfm
http://www.nationmaster.com/encyclopedia/Octopus%23Physiology
http://www.montereybayaquarium.org/storage/wallpaper/800x600/mba_wallpaper_800_giant_octopus.jpg
http://www.elasmodiver.com/BCMarinelife/images/Cushion-star-4.jpg
http://www.seaotter.com/marine/research/pteraster/tesselatus/html/cushionstar.jpg.html
http://www.seasky.org/reeflife/sea2d.html
http://www.peteducation.com/article.cfm?c=16+2158+2218&aid=3146
Sea Lettuce:
http://www.mesa.edu.au/friends/seashores/u_lactuca.html
http://www.edc.uri.edu/restoration/html/gallery/plants/sea.htm