Great White Shark Extinction
This is a South Africa news story, published by Guardian, that relates primarily to Alison Towner news.
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Entertainment
‘Awe-inspiring and harrowing’: how two orcas with a taste for liver decimated the great white shark capital of the world
82% Informative
The first great white shark carcass of a great white, a small female, washed up in South Africa on 9 February 2017 .
For eight eerie weeks , not one great white was sighted in Gansbaai on the Western Cape .
It was not until May that sightings of the sharks returned to their peak.
Dr Alison Towner led necropsies on the four most recent dead sharks.
They were torn open at the pectoral girdle, just behind the gills, with surgical precision.
The signs all pointed to the same culprits: orcas .
This explosion of prey species could represent what ecologists call a trophic cascade.
Loss of a predator reverberates down the food chain, unbalancing the ecosystem.
The absence of sharks can also bring disease: since June 2024 , seals in the Western Cape have become infected with rabies, an epidemic that reached Mossel Bay in July .