Scientists recorded the sounds of mother dolphins for 30 years to observe this conclusion.
“They use these whistles to keep track of each other. They’re periodically saying, ‘I’m here, I’m here’,” toldstudy co-author Laela Sayigh, a Woods Hole Oceanographic Institution marine biologist in Massachusetts.
“That was true for every one of the mums in the study, all 19 of them,” said biologist Peter Tyack, a study co-author from the University of St Andrews in Scotland.The study took three decades to complete but has been hailed as revolutionary. However, since the researchers focused solely on the signature call, it remains unclear whether dolphins also use baby talk for other exchanges and whether it helps their infants learn to “talk” as it seems to do with humans.
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