Seal Solution: Killer Whale Sub

I was watching a show on the WFN (cant remember the name of it?????) the other night and they were testing a underwater Airmar transducer that was emitting a specific frequency to repel seals.
I was 100% effective up to 35 meters for seals and apparently a frequency fish cant hear.
This is something that needs to be marketed.........
 
I have seen a boat tow an inflatable killer whale to repel seals before.. had a good chuckle at that, don't know how effective it was.
 
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