Invertebrates. For every one of us, there are 200 million of them.
David Attenborough reveals the amazing stories behind these tiny lives.
Find out more with bbc.co.uk
Undergrowth top ten
Watch video clips of the most amazing moments from the series, as chosen by the programme makers.
The science behind the series
How do insects fly? Why do cicadas spend so long underground? How do insects breathe underwater? Find out with the Open University.
Life on Air
Explore David Attenborough's extraordinary career from his passion for fossils to his amazing contribution to natural history film-making.
Insect tricks of survival
How have insects become the most successful creatures on the planet? Discover how they have adapted and where to look for real life examples.
Wildfacts
Fascinating facts about many of the animals from the series from insects to snails, spiders and crustaceans.
Free insect wall planner
For a free insect activity wallplanner from The Open University order online.
