Swarm behavior refers to the collective movement and actions of a group of individuals, often seen in animals like birds, fish, and insects. This phenomenon occurs when individuals follow simple rules, such as aligning with neighbors or avoiding obstacles, leading to complex group dynamics. In nature, swarm behavior helps species find food, evade predators, and migrate efficiently. For example, a school of fish can change direction rapidly to confuse predators, while a flock of birds can create intricate patterns in the sky. Understanding swarm behavior has applications in robotics and computer science, where similar principles can be used to coordinate multiple agents.