Batesian mimicry is a form of mimicry where a harmless species evolves to resemble a harmful or unpalatable species. This resemblance helps the harmless species avoid predation, as predators learn to associate the appearance of the harmful species with a negative experience, such as being stung or poisoned.
An example of Batesian mimicry can be seen in certain butterflies that mimic the coloration of poisonous species. By imitating the warning signals of these dangerous butterflies, the mimics gain protection from predators that have learned to avoid them, despite being harmless themselves.