Orca whale/ Killer whale, 逆戟鯨/ 殺人鯨

A pod of orca whales swim in the waters of the San Juan Islands near Friday Harbor, Washington, with Mt. Baker in the distance. (AP Photo/Rachel La Corte)
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Photos of the Week: 9/13-9/19 - In Focus - The Atlantic
http://www.theatlantic.com/infocus/2014/09/photos-of-the-week-9-13-9-19/100816/
Killer whale - Wikipedia, the free encyclopedia
The killer whale (Orcinus orca), also referred to as the orca whale or orca
http://en.wikipedia.org/wiki/Killer_whale
虎鯨 - 維基百科，自由的百科全書
虎鯨（學名：Orcinus orca）又稱為殺人鯨、逆戟鯨
http://zh.wikipedia.org/wiki/%E8%99%8E%E9%AF%A8
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