Orcas: Gangbangers of the ocean

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In March 2019, scientists studying whales near Southwestern Australia stumbled upon a supersize spectacle that few had seen before — a pod of orcas viciously attacking a blue whale. Over a dozen orcas surrounded the mighty animal. They had already bitten off its dorsal fin, and the animal was unable to evade the fast and agile predators.

The water ran red with the blood of the massive creature, and chunks of its flesh were floating all around. The scientists observed one orca force its way into the blue whale’s mouth and feast on its tongue. It took an hour for the orcas to kill the blue whale, and once they did, about 50 other orcas showed up to devour the carcass.

A pod of orcas taking down a blue whale is “the biggest predation event on Earth, maybe the biggest one since dinosaurs were here,” said Robert Pitman, a marine ecologist at Oregon State University and an author of the paper.


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hood b. goode

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Two orcas named Port and Starboard seem to have developed a taste for great white sharks. Since 2017, eight great white sharks have washed ashore in South Africa, with signs of having been attacked by orcas. Seven of the sharks—typically apex predators—were missing their livers, and some didn’t have their hearts anymore.

The sharks’ wounds, as well as recorded sightings of the two orcas, indicated to a team of researchers that Port and Starboard were responsible for the killings, and they believe that more sharks were likely killed by the same pair but didn’t wash ashore. The findings are published in the African Journal of Marine Science.

 
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