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 Post subject: Shark Repellent
PostPosted: Sun Sep 29, 2013 12:13 am 
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I was just watching the show Oceans on Discovery World and they have developed a shark repellent. They want to use it around commercial fishing lines to protect the thousands of sharks that get caught on the lines and die.

Apparently scientists have discovered that sharks dislike the scent of dead/rotting shark. The group made a liquid of distilled dead shark flesh. They were surrounded by sharks and fish after chumming the water. They released this 'shark repellent' and the sharks started to dissipate. After a few minutes all the sharks had left and the fish remained.

I'm curious is this technique could be used at beaches that have issues with sharks. Anyone hear of this before?


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 Post subject: Re: Shark Repellent
PostPosted: Sun Sep 29, 2013 3:07 am 
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I am surprised they made a big deal out of that. Shark repellents using extract of dead shark have been around since at least WWII. They have been of limited effectiveness hence the ongoing work to develop something better.


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 Post subject: Re: Shark Repellent
PostPosted: Sun Sep 29, 2013 7:55 am 
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hmmm.....

advantages
not being eaten by sharks.

disadvantages
smell like rotting fish.


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 Post subject: Re: Shark Repellent
PostPosted: Sun Sep 29, 2013 9:24 am 
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Saw a show that was using rare-earth magnets as shark repellent... combine that with the dead fish and we've got a hell of a good new kook outfit!


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 Post subject: Re: Shark Repellent
PostPosted: Sun Sep 29, 2013 12:06 pm 
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Humans wouldn't notice the smell, the concentrated flesh is only sensitive to the sharks in the water.

The same show they were discussing using a mixture of rare earth metals to fabricate the fishing hooks so sharks wouldn't be attracted the them. Maybe an insert in a surfboard of this metal would act as a safeguard?


Last edited by shawn13 on Mon Sep 30, 2013 12:24 pm, edited 1 time in total.

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 Post subject: Re: Shark Repellent
PostPosted: Sun Sep 29, 2013 10:16 pm 
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Ok so the sharks think "well what kinda funked up monkey would dip themselves in that crap" and feel sorry for you :)
Just a little curious about Earth metals too - do they normally come from another Planet ?


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 Post subject: Re: Shark Repellent
PostPosted: Mon Sep 30, 2013 12:30 pm 
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Did I say dip yourself in the stuff? You could spread it like chum or from a buoy.

This was a serious topic, unless you'd rather wear a zebra striped wet suit.


Last edited by shawn13 on Sun Mar 02, 2014 2:09 am, edited 1 time in total.

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 Post subject: Re: Shark Repellent
PostPosted: Tue Oct 01, 2013 9:07 am 
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Kite2Heaven wrote:
Just a little curious about Earth metals too - do they normally come from another Planet ?


Technically i think most of the elements come from other planets/space but i am definetely not clever enough to explain or expand.


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