Tasmania’s salmon industry detonates underwater bombs to scare away seals – but at what cost?

Thu, 23 Sep 2021 05:41:34 +1000

Andrew Pam <xanni [at] glasswings.com.au>

Andrew Pam
<https://theconversation.com/tasmanias-salmon-industry-detonates-underwater-bombs-to-scare-away-seals-but-at-what-cost-167854>

"Australians consume a lot of salmon – much of it farmed in Tasmania. But as
Richard Flanagan’s new book Toxic shows, concern about the industry’s
environmental damage is growing.

With the industry set to double in size by 2030, one dubious industry practice
should be intensely scrutinised – the use of so-called “cracker bombs” or seal
bombs.

The A$1 billion industry uses the technique to deter seals and protect fish
farming operations. Cracker bombs are underwater explosive devices that emit
sharp, extremely loud noise impulses. Combined, Tasmania’s three major salmon
farm operators have detonated at least 77,000 crackers since 2018.

The industry says the deterrent is necessary, but international research shows
the devices pose a significant threat to some marine life. Unless the salmon
industry is more strictly controlled, native species will likely be killed or
injured as the industry expands."

Cheers,
       *** Xanni ***
--
mailto:xanni@xanadu.net               Andrew Pam
http://xanadu.com.au/                 Chief Scientist, Xanadu
https://glasswings.com.au/            Partner, Glass Wings
https://sericyb.com.au/               Manager, Serious Cybernetics

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