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Stories about: killer whale

Orca Whales Use Sonar to Hunt for Their Favorite Fish Orcas, like most whales, have the innate ability to use high-frequency sounds in order to detect obstacles or food in the water, or for communicating among themselves over long distances. Now, researchers in Hawaii seem to believe that the large animals can also use this ability to spot their favorite types of fish i... 19 November 2008 03:30 GMT