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Latest Marine mammals and sonar Stories

Whales Hear Us More Than We Realize
2014-05-02 03:56:58

Tom Rickey, Pacific Northwest National Laboratory Killer whales and other marine mammals likely hear sonar signals more than we've known. That's because commercially available sonar systems, which are designed to create signals beyond the range of hearing of such animals, also emit signals known to be within their hearing range, scientists have discovered. The sound is likely very soft and audible only when the animals are within a few hundred meters of the source, say the authors...

Lawsuit Lands US Navy's Potentially Harmful Sonar Training Exercises
2014-01-28 10:58:03

Brett Smith for redOrbit.com - Your Universe Online In December, the National Marine Fisheries Service authorized Navy sonar training exercises off the coasts of Hawaii and California through 2018. This authorization came despite admittance by the Navy that the work will kill up to 155 marine mammals, cause more than 2,000 lasting injuries and generate approximately 9.6 million instances of temporary hearing loss – as well as disruptions of natural activities. On Monday, groups led by...

Military Sonar Disrupts Behavior Of Blue Whales
2013-07-03 14:31:38

Michael Harper for redOrbit.com - Your Universe Online A new study has found whales do not care for the sound of the sonar used by militaries to detect submarines. Researchers from Duke University in Durham, North Carolina, have observed the behavior of whales as they come into areas where sonar is being used and found these marine mammals may even avoid venturing into new feeding areas when they hear sonar. The results of this research suggest militaries should refrain from...

2011-10-19 14:09:05

Scientists know that the blood and tissues of some deceased beaked whales stranded near naval sonar exercises are riddled with bubbles. It is also well know that human divers can suffer from bubbles-induced decompression sickness, also known as the bends. What researchers know comparatively little about is how living marine mammals handle the compression of lung gas as they dive deep and then resurface. Now, in a study published online in the Proceedings of the Royal Society B, a team that...

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2011-03-17 10:28:34

Scientists have long been aware of a link between naval sonar exercises and unusual mass strandings of beaked whales. Evidence of such a link triggered a series of lawsuits in which environmental groups sued the U.S. Navy to limit sonar exercises to reduce risk to whales. In 2008, this conflict rose to the level of the US Supreme Court which had to balance potential threat to whales from sonar against the military risk posed by naval forces inadequately trained to use sonar to detect enemy...

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2008-11-30 14:25:00

Australian authorities reported on Sunday that at least 150 whales have died after being stranded on Tasmania's west coast. The long-finned pilot whales were discovered on Saturday, badly injured by jagged rocks. The body count was affirmed on Sunday to be 150, double the original estimate of 80 on Saturday. An official said that rescuers did managed to save 30 whales, which were trapped in shallow reefs, by using a small safety boat to steer them to deeper water. Whales pass Tasmania as they...

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2008-11-13 08:00:00

In a crushing defeat for environmentalists, the Supreme Court ruled on Wednesday the US Navy can conduct sonar training exercises off the southern California coast without restrictions designed to protect whales, dolphins and other marine mammals. The high court threw out a federal judge's injunction that had required the Navy to take precautions during submarine-hunting exercises. Environmental groups argued that the intense sound waves could harm or even kill 37 species of marine mammals,...

2008-10-09 09:00:26

From staff and wire reports WASHINGTON Whales may simply have to pay the price as the Navy trains for war, Supreme Court justices suggested Wednesday. In a closely watched environmental case, justices on Wednesday repeatedly sounded sympathetic to Pentagon officials who want to run large-scale Navy exercises off the Southern California coast. While the resulting underwater sonar storm disturbs marine mammals, it helps prepare sailors for combat. "I thought the whole point of the armed...

2008-08-20 09:00:59

We were cheered to learn that the U.S. Navy and conservation groups have reached a court-approved settlement that allows the military ample opportunity to test its low-frequency sonar systems while protecting the habitats of marine life . So it is especially disturbing that the Bush administration is still trying to block the courts' ability to mediate future agreements between the military and environmentalists. The vigilantly anti-regulatory Bush administration claimed that...

2008-08-13 21:00:15

The U.S. Navy has agreed to restrict the use of sonar during its training exercises as part of a deal with environmental groups, officials said. The groups argue the use of low-frequency active sonar harms whales and other creatures, the Los Angeles Times reported Wednesday. The agreement, which was approved by a federal judge in San Francisco, affects the use of sonar in the Pacific Ocean, which is home to whale breeding grounds, The Navy has said it is necessary to use sonar as a part...


Word of the Day
ween
  • To think; to imagine; to fancy.
  • To be of opinion; have the notion; think; imagine; suppose.
The word 'ween' comes from Middle English wene, from Old English wēn, wēna ("hope, weening, expectation"), from Proto-Germanic *wēniz, *wēnōn (“hope, expectation”), from Proto-Indo-European *wen- (“to strive, love, want, reach, win”).
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