At some point, the larvae settle down. They abandon their youthful wanderlust and remodel their bodies into sedentary adult shapes. This process – metamorphosis – is the most important moment in their lives. Scientists once suspected that it happened randomly, with the larvae settling in arbitrary places and surviving if they were lucky enough to hit a good location. In fact, they are purposeful and selective. They follow clues like chemical trails, temperature gradients, and even sounds, to find the best spots for metamorphosis.
