Killer whale v shark: Solo orca eats great white
A solitary killer whale, or orca, has been filmed hunting and killing a great white shark in an "astonishing" attack.
Scientists said it was "unprecedented" and showed the exceptional predatory skills of killer whales.
Two orcas in particular off South Africa's coast have been observed before working together to hunt and kill sharks, including great whites.
"But this caught us off guard," said shark biologist Dr Alison Towner.
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