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Stories about: orca

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 Navy Sonar Kills The Orcas and Other Whales Biologists got alarmed when the killer whales (orcas) of Washington State's Puget Sound started disappearing. Using high technology supersensitive microphones, Ken Balcomb has been eavesdropping on the region's resident killer whales. Unlike migratory orcas, these ones spend their whole lives among sounds.... 8 May 2007 04:59 GMT