Our human senses are pretty incredible - but we only experience the tip of the iceberg. Imagine if you could 'see' with sound, smell food buried deep underground, or see the world in slow motion. This series explores the hidden world of animal senses. Stories covered include how elephants can hear thunderstorms hundreds of miles away, how bees distinguish between complex pheromones and the bizarre deep-sea arms race that has forced an ocean giant to evolve the largest eye on our planet - the size of a human head! Biologist Patrick Aryee and physicist Helen Czerski are on hand to explain the science behind these amazing abilities. Shot in a spectacular and contemporary style, the series showcases some of the wildest habitats on Earth and gets up close to enchanting wildlife.