'What the hell did this?': The orca brothers preying on great white sharks - BBC
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Site search21 hours agoIsabelle GerretsenDave Hurwitz/ Simon's Town Boat CompanyWhen scientists first found dead great whites around South Africa, they couldn't believe their eyes. All bore the same marks of mutilation – their bodies were torn open and their livers had been extracted – and pointed to the same culprit. These deadly tactics are now seen around the world. On 3 May 2017, a huge carcass of a great white shark washed up on the shore of Gansbaai, a fishing village near Cape Town in South Africa. The female shark weighed 1,100kg (2,425lb) and had a gaping wound on her underside, where her 90kg (198lb) liver had been extracted. "We were like, 'What the hell did this?'" recalls Alison Towner, who led the necropsy on the dead shark. "It was extraordinary," says Towner, a shark biologist at Rhodes University in Grahamstown, South Africa. "I'd seen hundreds of great white sharks at that point… never had I seen them just wash up one after another, after another. "It was the first sign that an underwater battle was unfolding. As she later learned, it would have ramifications across the world's oceans. I'm not talking about a gradual decline of great whites.
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Orcas are hunting great White Sharks around the world, scientists confirm - Geo News
Orcas are hunting great White Sharks around the world, scientists confirmThe killing of great whites by orcas has been reported in the waters of South Africa, California, and Australia, and the implications that the hunting behaviour would have on the marine ecosystem have been considered. In fact, it all started back on May 3, 2017, when the body of a female great white, weighing 1,100 kilograms, washed ashore in Gansbaai, close to Cape Town, with a deep gash through which its 90-kilogram liver had been extracted. Five more corpses of great whites appeared with similar wounds in the coming months, as claimed by shark biologist Alison Towner of Rhodes University. Two adult males, called Port and Starboard, who are supposed to be brothers judging by their dorsal fins that fold differently, were identified as the most probable perpetrators. The connection was officially established in 2022 based on video footage of a drone that caught three orcas chasing and biting a 3-meter great white off Mossel Bay. The sharks quickly disappeared from Dyer Island, one of the best places in the world to witness a great white.
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