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New documentary is the woman who spoke dolphins

June 17, 2014 Last updated at 13:37 BST clock

50 years ago, a young researcher spent months living with a dolphin named Peter, in the context of a revolutionary experiment to try to teach the animal to learn to speak.

The interaction between the two of them were recorded in thousands of roles to bands that are now part of the documentary filmmaker Christopher Riley role.

Riley told BBC Breakfast about the girl who spoke to dolphins.

The girl who spoke with the dolphins, BBC Four, 21 hours, 17 June