Secret World of Sound

Sound is the vocabulary of nature. It plays a crucial role in the lives and everyday struggles of animals around the globe - from birth to surviving adulthood and finding a mate. In this ground-breaking series, David Attenborough explores the extraordinary ways that animals hear and produce sound, and how it influences the decisions they make.

Secret World of Sound uses cutting-edge audio technology to reveal new perspectives and understanding of animal behaviour. We will see how baby caiman communicate with each other from within the egg, how lions and hyaenas battle in the dark using sound, how a strange fish baffled local residents with its eerie hum, and how some birds have mastered the art of mimicry to remarkable effect.

Filmed in 4K ultra-high definition, each episode of this series features in-depth stories of up to eight animals, followed by a five-minute behind-the-scenes segment revealing the fascinating technologies used to make the series. The latest super-sensitive microphones and recording devices were used to capture sounds that are often out of reach of the human ear. For the first time, this major blue-chip television series will place sound centre stage.