SONAR

Can You Hear Me Now?

Posted Mon, Apr 27, 2009 by GraceS to bottlenose dolphins, dolphins, SONAR

A recent study conducted at the University of Hawaii provides “sound” evidence that sonar induces temporary deafness in bottlenose dolphins. Many have long blamed man-made noise -- mainly sonar used by the navy -- for mass strandings of whale and dolphin species. Although this study does not provide concrete proof that submarine and warship sonar activity is causing strandings, it does prove definitively that sonar activity can affect cetaceans if they are close enough to the source and exposed over a prolonged period of time. Whales and dolphins use sound for navigation and temporary deafness can leave them disoriented. They are traveling over very large distances and cannot afford to lose their sense of direction. If they were to accidentally swim into a shallow area or be washed ashore, they could rapidly become dehydrated and die.


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Naval Sonar Could Affect Whales, Dolphins

Posted Wed, Oct 22, 2008 by Jon Frank to dolphins, Navy, SONAR, whales

jacksonville sonar range affects whales, sea turtles, corals

Next spring, the Supreme Court will weigh in on the U.S. Navy’s use of high-intensity, mid-frequency sonar off the southern California coast. Use of this type of sonar, which the Navy admits may significantly disturb or injure an estimated 170,000 marine mammals, was challenged in court based on protections found in the National Environmental Policy Act of 1970. Now that oral arguments before the Supreme Court have concluded, we must wait for its decision in 2009. But when you’re as passionate about the issues as our staff and supporters, waiting can be incredibly difficult, so thanks to a Wavemaker in St. Augustine, FL named Marcella, I have something that you can do to help protect marine mammals and other ocean wildlife from sonar.


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Court Considers Whales and Sonar

Posted Sun, Oct 12, 2008 by Emily Fisher to SONAR, whales

beached whale

In further noisy ocean news this past week, our nation's highest court heard oral arguments in the dispute over the Navy's use of mid-frequency active sonar off the coast. The sonar has been associated with whale injury and beach strandings; meanwhile, the Navy argues that halting or restricting sonar training exercises in any way harms national security. According to the Natural Resources Defense Council (NRDC), the plaintiff in the case, many whales that have been beached as a result of sonar have suffered physical trauma, including bleeding around the brain, ears and other tissues. In addition, many have shown symptoms akin to a severe case of "the bends" -- the illness that can kill scuba divers who surface quickly from deep water, implying that the whales' dive patterns are altered. Sonar has also been shown to disrupt feeding and other vital behavior and to cause a wide range of species to panic and flee. The NRDC case is specific to training exercises in the Pacific Ocean and whether the Navy has to be environmentally responsible in its routine trainings by reducing their impacts to whales.


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Whales and U.S. Navy Sonar

Posted Fri, Feb 24, 2006 by Dick Russell to Navy, SONAR, whales


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EU Parliament Votes for Whales

Posted Mon, Nov 1, 2004 by sandy to dolphins, SONAR, whales

Those Europeans always seem to be - environmentally, at least - one step ahead. They have seafood labels, wind farms, viable Green parties...and now a multi-national body acknowledging the danger of navy sonar testing to whales and dolphins. Last week, by a vote of 441 to 15 (with 14 abstentions), the European Parliament adopted a resolution asking its member states to quit sonar testing until scientists have fully assessed its effect on ocean life.


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NATO SONAR may be killing whales

Posted Mon, Jul 26, 2004 by Gib to NATO, SONAR, spain, whales

From Reuters -- "Dead Whales Land in Canaries After Naval Exercises":

Two dead whales have landed in Spain's Canary Islands, raising fears they may have been hurt by NATO military exercises off Morocco and that more could have died, officials said on Friday.


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