30 Animals That Made Us Smarter
By BBC World Service
Dolphin and tsunami detector
Monday, 2 September
The way dolphins communicate is being studied to create tsunami early warning systems. They produce click sounds to help navigate and hunt for prey. They listen back to the echoes to help create a 3D image and visualise their surroundings.
www.bbcworldservice.com/30animals
With Patrick Aryee.
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