Incredible insects and their special skills

Today, we are exploring the lives of insects, and some of the incredible abilities they've evolved to enable them to thrive. Coming up, the fly larvae that can withstand huge pressures in some of the world's deepest lakes; the butterfly caterpillar that pretends it's an ant to blag free board, lodgings and even ant grubs to eat inside ant nests, and the remarkable visual systems of wasps that…