Killer whales are the only natural predator of baleen whales—those that have "baleen" in their mouths to sieve their plankton ...

New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...

Pack-ice killer whales are highly social creatures, communicating through various vocalizations like pulsed calls and whistles. For the first time, researchers have recorded these vocalizations and ...

Time is of the essence for a Brazilian neuroscientist who wants to study whale and dolphin brains before the brains decompose ...

In one recent loss, the female orca known as Tahlequah carried ... expansion plans — projects she said increase underwater noise, risks of whale-ship collisions and the possibility industry ...

Adrián Simancas , a 24-year-old kayaker in Chile, detailed what it was like to be in the mouth of a humpback whale as his father captured the jarring encounter on video on Feb. 8.

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After the sea creature "shut down" its mouth on the kayaker, it "took me underwater," he told CNN ... was worried he had just been eaten by a killer whale. Adrián's later fears included getting ...

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