Season 39

Florida is famous for its beaches, blue water and year round sun – but it also has a surprising wild side. It is home to pine forests, coral reefs and the famous Everglades wetland, the largest sub-tropical wilderness in the US. Here, manatees swim in crystal clear rivers, baby alligators practice their hunting skills and miniature deer roam free. Every year, this state faces the full forces of nature - from wildfires to flooding and powerful hurricanes. And today, a growing human population and a cast of animal invaders are threatening this wild paradise. With the help of pioneering scientists, will Florida’s wildlife continue to weather the storm?

With incredible underwater footage, David Attenborough reveals the true nature of the hippopotamus – an animal that cannot swim yet is utterly dependent on water.

A professor develops an extraordinary relationship with an octopus when he invites it to live in his home to learn about its intelligence.

Looking at the true nature of weasels. Often portrayed as the villains of the natural world, do they deserve this reputation?

How bears across the world have overcome the challenges of life - from finding food and raising cubs to confronting rivals and habitat loss - all thanks to brains, brawn and amazing adaptability.

Former Royal Marines commando Aldo Kane exposes the shocking secrets of the illegal tiger trade in south east Asia, and those who profit from it.

Colin Stafford-Johnson explores corners of Cuba that few outsiders have seen. Amongst the wonders he encounters is the bee hummingbird, the world’s tiniest bird found nowhere else on the planet.

Colin Stafford-Johnson continues his journey in Cuba, encountering bats feeding on nectar from giant hibiscus flowers, and tiny frogs, smaller than a fingernail.

The science behind the extraordinary abilities of eagles, the most powerful birds in the sky, with dramatic stories and some remarkable experiments.