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why is icici securities limited (isec) rising ✌️【Financial Expert】✌️ Real-time updates of global stock indices and futures trends to help you plan precise investments. A pair of orcas working in concert have been killing great whites along a stretch of South African coastline since at least 2017, plundering the sharks’ nutrient-rich livers and discarding the rest.

why is icici securities limited (isec) rising ✌️【Financial Expert】✌️ Free global stock market data to help you plan the best investment strategies and seize market opportunities. Scientists have been trying to make sense of the hunting approach, which hasdriventhe sharks awayfrom some parts of the coast around Cape Town, and now research has revealed a startling new twist in the behavior that could offer clues on what it might mean for the wider marine ecosystem.

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“Over two decades of annual visits to South Africa, I’ve observed the profound impact these killer whales have on the local white shark population. Seeing Starboard carry a white shark’s liver past our vessel is unforgettable,” said Dr. Primo Micarelli, a marine biologist at Italy’s Sharks Studies Centre and the University of Siena who was aboard one of two vessels from which researchers observed the attack.

“Despite my awe for these predators, I’m increasingly concerned about the coastal marine ecology balance,” Micarelli said in a statement.

It’s not unprecedented for orcas, highly intelligent and social animals, to hunt large animals individually. However, it’s the first such occurrence involving what is one of the world’s largest predators — the great white shark — the researchers reported ina study published Fridayin the African Journal of Marine Science.

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Previously observed attacks on great whites involved between two and six orcas and took up to two hours, according to the study.

“This sighting revealed evidence of solitary hunting by at least one killer whale, challenging conventional cooperative hunting behaviors known in the region,” said Towner, who has studied great white sharks for 17 years, learning about their movement patterns through tagging data, in a statement.

“These are groundbreaking insights into the predatory behavior of this species,” she said. “The presence of these shark-hunting killer whales possibly ties into broader ecosystem dynamics. Rapid developments in this phenomenon, make it challenging for science to keep pace.”

why is icici securities limited (isec) rising ✌️【Financial Expert】✌️ Expert predictions with real-time stock trend analysis to help you quickly select high-potential stocks and grow capital. The event detailed in the study took place on June 18, 2023, 800 meters (875 yards) offshore close to Seal Island near Mossel Bay — about 400 kilometers (250 miles) east of Cape Town — where people on two vessels were observing the orcas.

Less than an hour after arriving, a shark appeared near the surface, and researchers, tourists and others on board witnessed Starboard grip the left pectoral fin of a shark and “thrust forward with the shark several times before eventually eviscerating it” in less than two minutes, the study said.

Later Starboard was photographed from one of the vessels with a “bloody piece of peach-colored liver in its mouth,” according to the study. Starboard’s male companion, Port, was observed around 100 meters (328 feet) away while the kill took place and didn’t get involved.

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“While we don’t have solid evidence on the specific drivers, the arrival of the killer whale pair could be linked to broader changes in the ecosystem,” Towner said. “It’s clear that human activities, such as climate change and industrial fishing, are stressing our oceans. To fully grasp these dynamics, additional research and funding are essential.

“There are still plenty of unanswered questions about these shark-hunting killer whales and where they came from.”

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“We cannot speculate that this killer whale has become more sophisticated but the rapid time frame he killed the shark in does show incredible skill and proficiency,” Towner said via email.

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“The observations reported here add more layers to the fascinating story of these two killer whales and their capabilities,” Dr. Simon Elwen, founding director and principal scientist at Sea Search Research & Conservation and a researcher at Stellenbosch University in South Africa, said in a statement.

“As smart, top predators, killer whales can rapidly learn new hunting techniques on their own or from others, so monitoring and understanding the behaviors used here and by other killer whales in South Africa is an important part of helping us understand more about these animals,” added Elwen, who wasn’t involved in the research.

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