Expandable Bodies

Expandable Bodies

Available on Prime Video, BBC Select
S3 E3: The bodies of some animals stretch and shrink in extraordinary ways. The anaconda can swallow prey twice its own body size and then go for over a year without eating. The camel's curious hump can almost double in weight giving it the energy to travel huge distances across deserts. In this revealing nature documentary, David Attenborough asks: what is the secret behind such expandable bodies?