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Series exploring animal senses beyond human perception. Sound - how alligators use low-pitch rumbles, how bats see with sound, and a hearing test for a herd of elephants.

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.

Presenters Helen Czerski and Patrick Aryee 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.

59 minutes

Last on

Sat 21 Sep 2019 09:00


Music Played

Timings (where shown) are from the start of the programme in hours and minutes

  • 00:28

    The xx



Role Contributor
Presenter Patrick Aryee
Presenter Helen Czerski
Series Producer Alex Williamson
Producer Sam Hodgson
Director Sam Hodgson
Executive Producer Tim Martin


  • Tue 26 Aug 2014 20:00
  • Tue 26 Aug 2014 21:00
  • Wed 27 Aug 2014 23:20
  • Wed 27 Aug 2014 23:50
  • Fri 26 Sep 2014 09:05
  • Tue 25 Jul 2017 15:30
  • Thu 9 Aug 2018 21:00
  • Sat 21 Sep 2019 09:00

Meet Helen and Patrick

Meet Helen and Patrick

Helen Czerski, physicist, and Patrick Aryee, biologist

The senses

The senses

Read more about how animals perceive the world.