South Africa’s Indian ocean coast is subject to shark attacks, and fatalities.https://www.portfoliocollection.com/travel-blog/south-africa-s
Existing shark nets are a mixed blessing, because other marine life gets trapped in the netting and perhaps, on balance, the nets do as much harm as good.
But the bright boffins have come up with the brilliant idea of an artificial kelp forest, which emits a small magnetic and electric current. I learn that sharks have very acute sensors located on their faces, and would sense the hostile barrier, and swim no further. Isn’t that clever?
Yet again, a kernel of new knowledge via my local radio station, Cape Talk Radio