The term "nocturnal" refers to animals or organisms that are active during the night and rest during the day. This behavior is often an adaptation to avoid predators, reduce competition for food, or take advantage of cooler temperatures. Common examples of nocturnal animals include owls, bats, and raccoons. Nocturnal creatures have special adaptations that help them thrive in low-light conditions. For instance, many have enhanced night vision, allowing them to see better in the dark. Some, like fireflies, use bioluminescence to attract mates or communicate, while others rely on keen senses of hearing or smell to navigate their environment.