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Why are orca called killer whales?

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  • American Cetacean Society. "Orca (Killer Whale)." American Cetacean Society Fact Sheet. 2008.
  • CNN. "Clash of the titans: Whales vs. Shark." Oct. 8, 1997.
  • PBS. "Killers in Eden."
  • Roberts, Callum. The Unnatural History of the Sea. Island Press. 2007
  • Russian Orcas. "Killer Whale Acoustic Behavior."
  • Russian Orcas. "Killer Whale Biology."
  • Russian Orcas. "Killer Whale Ecology and Behavior."
  • National Geographic. "Killer Whale (Orca)."
  • National Parks Conservation Association. "Killer Whale (Orcinus orca)."
  • The Marine Mammal Center. "Orca or Killer Whale." NOOA. Jan., 2002.
  • Visser, Dr. Ingrid. Orca Research Org.
  • Zimmerman, Steven T. "Orca: Wildlife Notebook Series." Alaska Department of Fish and Game. 1994.