Europe is at the centre of an illegal wildlife trade operation worth billions of pounds. Gangs are thought to be smuggling up to 350 million live eels from Europe and shipping them to Asia every single year. Once at their destination, the young eels are farmed to full size and redistributed across the world. But why is the European eel such a valuable commodity? To support the Natural History Museum’s work, visit nhm.ac.uk/wildcrimes