This episode explores the extraordinary sense of sight in the animal world. Travel through the colours of the rainbow, across the spectrum of light our eyes can see – and beyond.
In a look at the sense of sight, find out how caribou use UV light to avoid wolves and how dragonflies can make a kill in the blink of an eye. 1/3
A look at the hidden world of sound in the animal kingdom, including how bats can see with sound and elephants' phenomenal hearing. 2/3