Researchers in the US have been shocked to discover a beluga whale whose vocalisations were remarkably close to human speech.
While dolphins have been taught to mimic the pattern and durations of sounds in human speech, no animal has spontaneously tried such mimicry.
But researchers heard a nine-year-old whale named NOC make sounds octaves below normal, in clipped bursts.
They found that vocal bursts averaged about three per second, with pauses reminiscent of human speech. Analysis of the recordings showed that the frequencies within them were spread out into “harmonics” in a way very unlike whales’ normal vocalisations and more like those of humans.
Here is more on this story of whale sounds: