R.R. Bridge Fisher

High frequency barrier

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The news is talking about a high frequency barrier that pings to keep seals and sharks away from the beaches.

I wonder how this would effect any gamefish if there are any around and people that use the waters.

They said they are going to propose this in a meeting in barnstable.

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If it drives sharks away, I'd guess its a pretty safe bet it would do the same to any other fish in the area.

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What percentage of tourists actually want to go in the water past their knees? Don’t see how something like this can pay off for any town.

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8 hours ago, FishRatz said:

^^....driving away whales too.....this won't happen.....too many MMPA regs 

 

 

This too!

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They are proposing to anchor this "invisible fence" to the sea floor a half mile offshore. But the technical problems with that will pale in comparison to getting a change to the mmpa thru congress since the law prohibits any sort of disturbance to marine mammals that alter their behavior. That includes sounds. The seal cuddlers will be out in force on that point alone.

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Posted (edited) · Report post

Edit:  Video won't embed, but you can find it on Boston 25 website, which details the plan.  

Edited by TLap21

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Posted (edited) · Report post

I believe the high frequency ping will be in the atmosphere and not underwater because the energy of the high frequency get dissapated quickly in the water. 

This could affect the hearing of mammals like dogs that are on land if the sound travels more then a 1/2 mile as proposed. 

Edited by RedSoxTicket

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On 5/28/2019 at 0:53 PM, MakoMike said:

If it drives sharks away, I'd guess its a pretty safe bet it would do the same to any other fish in the area.

The news report stated that the sound drives the seals away to deeper water thus drawing the sharks away from the shallows. Supposedly this technology has been used to keep seals away from shellfish farms.

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