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#1 (permalink) |
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life hands you lemons...
Join Date: Feb 2007
Location: Vancouver, BC, Canada
Posts: 82
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Humans make fish deaf
Wow, deaf fish!
Humans make fish deaf | Metro.co.uk Humans make fish deaf Wednesday, April 18, 2007 An increase in manmade sounds underwater makes fish deaf, one U.S. professor says. Michael Smith, an assistant biology professor at Western Kentucky University, cited U.S. Navy sonar and oceanic shipping as possible noise pollution for fish, which use sound to find their way around and listen for predators. His study will expose locally bought rainbow trout, silver perch and goldfish to various sound combinations at a special sound booth. Then tests will see whether the fish have hearing loss. The fish's brain waves will be recorded through electrodes while the fish listen to tones. "We give a series of pure tones to fish through an underwater speaker, and we increase the intensity of the tones until we detect brain-wave activity," Smith said.
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When life hands you lemons...Simply refuse to sign for them. Life's lemons can't be delivered without an authorized signature. |
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#2 (permalink) |
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Please Boycott China
Join Date: Jun 2005
Location: Southwest
Posts: 666
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Interesting! I haven't heard anything like that before. Weird!
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French Ring http://www.youtube.com/watch?v=qfBY9X1CaiQ Wow! 100 points in obedience! http://www.youtube.com/watch?v=gYxz9M9TuqI |
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#5 (permalink) |
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Swifty the Rat
![]() Join Date: Jun 2004
Location: The Evergreen State
Posts: 10,844
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Yeah, they know by vibrations, even the slightest ones, the fish can't hear you clapping outside the fish tank, it has to be lot of vibrations to make them react. Sea mammals (Dolphins, etc) have ears though.
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created by seq |
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#8 (permalink) | |
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Labra lege!
Join Date: Oct 2006
Posts: 1,170
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Quote:
I don't know about fishes but I know that octopuses, squids and cuttlefishes are all deaf. I like octopuses because they can squeeze into tight spots. |
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#12 (permalink) | |
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I am in area SF
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Quote:
LOL, you are sooo funny!! I canīt believe that deaf fish. true, I thought, they has no ear.
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The laughter is the best medicine. |
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