Shark - Wikipedia, the free encyclopedia
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Sharks (superorder Selachimorpha ) are a type of fish with a full cartilaginous skeleton and a highly streamlined body. The earliest known sharks date from more than 420 million years ago, before t...
en.wikipedia.org/wiki/Shark
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Killer Whale - Wikipedia, the free encyclopedia
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The Killer Whale or Orca ( Orcinus orca ), or less commonly, Blackfish , is the largest species of the dolphin family. It is found in all the world's oceans, from the frigid Arctic and Antarct...
en.wikipedia.org/wiki/Killer_Whale
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No sharks are not mammals. no sharks are not mammals.
http://wiki.answers.com/Q/Are_sharks_mammals
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The sense of smell is so important to the shark that it devotes two-thirds of the brain to processing scent information! Sharks, unlike whales and dolphins, are not considered mammals but fish. Select a shark breed to find out more.
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laurier.vsb.bc.ca/studentp/joshrily/Sharks.html
laurier.vsb.bc.ca/studentp/joshrily/Sharks.html
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Each of these sharks reach large sizes and consume large prey such as marine mammals and sea turtles. The Bull Sharks cruise the shallow coastal waters and therefore might come into contact with humans the most. ... The sharks considered to be most dangerous are:
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www.caske2000.org/sharks/sharks.htm
www.caske2000.org/sharks/sharks.htm
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Many of the same species got the most attention when the focus was on 'shark attack' not so long ago and sharks were considered vermin and monsters.
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www.pacfish.org/sharkcon/documents/compagno.html
www.pacfish.org/sharkcon/documents/compagno.html
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Elephants and large sharks have no natural enemies other than man. But it costs a lot to maintain a large body. This is what I mean by trade-offs. On the overall scale of animals, sharks may be considered large.
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www.pacfish.org/sharkcon/documents/gruber.html
www.pacfish.org/sharkcon/documents/gruber.html
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Ask flipper, for as a dolphin, he knows that the way to kill a shark is to attack the gills, and mammals don't have gills.
http://www.answerbag.com/q_view/958046
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Some (like the great white, mako, tiger, and hammerhead) are swift predators that eat fish, squid, other sharks, and marine mammals. ... Biology; Animal Printouts; Biology Label Printouts; Biomes; Birds; Butterflies; Dinosaurs; Food Chain; Human Anatomy; Mammals; Plants; Rainforests; Sharks; Whales...
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www.enchantedlearning.com/subjects/sharks/
www.enchantedlearning.com/subjects/sharks/
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