Part 1/3 Life in the Undergrowth Ep. 1. David Attenborough tells the story of the land-living invertebrates. He delves into the private life of Europe`s dramatic leopard slug, a common garden resident with a truly bizarre end to its marathon mating ritual; watches the courtship ballet of tiny springtails on the underside of a leaf; sees swarms of bright red South African millipedes find partners, and in the caves of Venezuela meets the giant bat-eating centipede. Part 2 / Part 3.