A pack of orcas hunting and killing an adult blue whale has been recorded for the first time, scientists say
The stalking episode took place in March 2019 at Bremer Bay, Western Australia, according to research published in the latest edition of the scientific journal Marine Mammal Science. Two more separate killings of blue whale calves were captured in the same area in 2019 and 2021. Even though there have been reports of orcas sporadically attacking blue whales and causing significant injuries, there has been no confirmed kill of an adult or calf until now, the research added.
At least 16 of the same orcas took part in all three attacks.Adult female killers could be more likely to start attacks because they have young to feed, and therefore require sustenance more often than adult males. The first predation attracted numerous seabirds, including flesh-footed shearwaters, Wilson's storm-petrels, white-faced storm-petrels and at least one black-browned albatross. "These guys are ferocious with a preference for squid, fish and beaked whales.
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