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Famed biologist and conservationist Roger Payne, who first discovered whale song in 1967, has died aged 88.

Nature filmmaker Tom Mustill worked with Mr Payne up until his death, and told Today's Amol Rajan: "He totally changed our perception of these animals that we were just slaughtering.

"It's not data that drives change in people, it's emotion and connection."

We also hear some of the whale song that Mr Payne was so famous for.