Navy Allowed to Kill Whales in Hawaii During Sonar Training
WASHINGTON, DC, January 12, 2009 (ENS) - The federal government today issued authorization to the U.S. Navy to impact whales and dolphins while conducting sonar training exercises around the main Hawaiian Islands for the next five years. The letter of authorization and accompanying rules allow for injury or death of up to 10 animals of each of 11 species over the five years covered by the regulations.
The Navy requested authorization under the Marine Mammal Protection Act because the mid-frequency sound generated by tactical active sonar, and the sound and pressure generated by detonating explosives, may affect the behavior of some marine mammals or cause what the Navy calls "a temporary loss of their hearing."
Mid-frequency sonar can emit continuous sound well above 235 decibels, an intensity roughly comparable to a rocket at blastoff across hundreds of miles of ocean to reveal objects, such as submarines, underwater.
NOAA's Fisheries Service, which issued the authorization says serious injury or death to marine mammals is not expected as a result of the exercises. But the agency acknowledges that exposure to sonar has been associated with the stranding of some marine mammals, and some injury or death could occur.
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http://www.ens-newswire.com/ens/jan2009/2009-01-12-092.asp