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Not getting eaten is at the top of the to-do list for most members of the animal kingdom. Now, a new study suggests several species of dolphins can tell when they’re in danger of becoming a killer whale’s dinner—simply by eavesdropping on their calls.
Risso’s dolphins and short-finned pilot whales are frequently devoured when they live alongside mammal-eating orcas. To find out whether the dolphins can work out when they are in danger, researchers played recordings of killer whale calls underwater to 10 pilot whales off the coast of North Carolina and four Risso’s dolphins swimming near Southern California.
Animals - Killer - Whale - Sounds - Subset
The animals didn’t respond to many of the killer whale sounds, but a subset of the calls provoked a strong reaction in both species: Risso’s dolphins rapidly fled, ending up more than 10 kilometers away from where the sounds were played. Pilot whales, on the other hand, called to each...
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