Sharks on my Sonar!
Sharks on my Sonar!: we head out to the Noosa River in Australia for this story…where we get to see how Humminbird have perfected their sonar picture underwater.
It is true genius. The machine doesn’t lie. The sharks on the screen are no doubt sharks! As a bunch of Zambezis aka Bull Sharks, are attracted by splashing in the water of this wild river.
And this is all recorded for us ALL to see…that sonar can undoubtedly detect a shark. Especially in calm waters like the Noosa River.
Enjoy the display…
Sharks on my Sonar!
Here is another great article referencing the same fact.
https://recfishwest.org.au/news/spotting-sharks-on-your-sounder-to-help-reduce-bite-offs/
Sharks Board
I first approached the sharks board, back in the ‘2000s’, about replacing their defunct killing methods, with sonar detection. It’s the most straightforward solution under the sun. Sheldon Dudley of the sharks board vehemently opposed my suggestion back in the 2000’s. With him was Graham Charter. The other guys just did nothing. Said nothing. Many meetings went nowhere. It was not their idea, and so was not going to be deployed.
The main excuse offered by the team back then, was that sharks have no swim bladders, and so could not be detected with sonar?!
I never wanted anything except some involvement. However, as it turned out – it was not the right channel to go down, to try to effect change.
My Motivation
I had back then recently come across an entire pod of dead dolphins. On the back of a shark’s board bakkie. I was furious. And I still am. Those dolphins died (suffocated to death), in the shark nets of Umtentweni. Whilst there were zero beach users at Umtentweni. It was a Monday morning. None of us were even surfing. Nobody was using the ocean at Umtentweni that fateful day.
During the week there might be a few surfers. And on weekends the weekend warriors. Some families come down on weekends to enjoy the granny pool or the shore break.
Are these enough people, this risk so big, that a whole family of dolphins…must die a horrid death in gill nets?
Sonar alternatives
The Australians also kill bull sharks and the like, willy nilly, with shark nets. Archaic gill nets. That kill everything. They kill whales over there in the nets as successfully as our guys. They also use drum lines to actually catch the sharks, and then drag them away from their homes. Forced relocation. This does not work since bull sharks always hang around their own river mouths.
But the Ozzies have developed something clever called Clever Buoy. I am not sure why they don’t use off-the-shelf available sonar equipment. To mitigate development and deployment expenses. But they are definitely on the right track.
Municipalities and you pay for the shark nets
Yip, you are the ultimate payer of the death nets strewn along the coastline of Kwazulu Natal in South Africa. Along with your municipality.
The shark’s board costs hundreds of millions per year. With this money, they kill (annual average):
Harmless Catches
And these they call…”HARMLESS CATCHES”?!?!
Please see the following irrefutable proof that the shark nets have been killing baby whales…here in South Africa. And in Australia.
shark nets Archives – The Sardine News
So all these animals must die…and nobody is swimming anywhere. The water is chock full of ecoli and other nasties right now too. Nobody should be near the ocean. And nobody should be killing sharks in these wayward flood conditions. Brown water to the horizon.
These conditions prevail for months at a time. The nets should be OUT!
More alternatives
Yes, there are more ways to stay safe…
- Exclusion nets: deployed perfectly at Fish Hoek (Cape Town) recently, these are proven winners. And these were deployed successfully long before there was even a sharks board. At Umtentweni Beach, and most other popular tourist spots along KZN, still have remnants of the infrastructure used. Concrete pillars with poles set into them. And tennis court netting stretched across them. Stopping any access for sharks. All the while allowing nature to continue along around them unimpeded
- Shark shields: for a tiny fraction of the cost of running the entire sharks board, they could equip all ocean users with shark shield devices. They are proven to work and are really cheap nowadays. Get it from the lifeguards and return it after swimming. They could even be rented out.
- Tracking devices: many great whites have already been tagged with devices that track their activity in real-time. Right now you can go to the Ocearch Project, and see where the whites are congregating. Let’s just tag the tigers and Zambezis too? I notice some Tiger Sharks, and even whale sharks have been tagged and can now be tracked too on that website. Go check it out, incredible technology applied so well. Some data is old. But new pings are popping all the time.
I have given up on trying to convince the sharks board to stop their heinous acts. We need to get rid of them ourselves somehow. Working with municipalities directly or something.
Please get in touch with Sean on +27793269671 or umzimkulu@gmail.com to discuss any of this further. Especially if you work at a municipality and want to save the people’s money from being used to kill marine life. The backbone of our tourism industry here in KZN.
