The term "nocturnal" refers to animals or organisms that are active during the night and rest during the day. This behavior helps them avoid predators and 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 communicate or attract mates during nighttime hours.