BBC - Super Senses The Secret Power of Animals (2014) part 2 Sound

Our human senses are pretty incredible - but we only see, hear and smell a tiny fraction of what's out there. There is a hidden world that animals across the globe can experience. Biologist Patrick Aryee and physicist Helen Czerski go beyond the limits of human perception to explore the extraordinary and surprising world of animal senses.

Part 2: Sound

We journey through the world of sound - from the deepest rumbles to the highest squeaks. Using specialised technology, they experience sounds beyond the range of our human hearing. This episode reveals how alligators use low-pitch rumbles to make the water around them dance and shows what it is like to be a bat and to see with sound. Also, Helen and Patrick convert a classic camper van into a giant speaker to conduct the ultimate hearing test for a herd of elephants.

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