AdvertisementOrcas take down a blue whale, proving they're the apex predators of the oceanFebruary 19, 2022Lauren SommerVanessa RomofacebookEmailWhile killer whales are known to attack blue whales, John Totterdell and his colleagues are the first to ever document a successful takedown. And they've done it more than once, publishing their findings in the journal Marine Mammal Science. (via AP)