Bioluminescence serves a variety of functions that help organisms survive and reproduce. Many species use light to attract mates, as fireflies do. Others use it for defense, startling predators or making themselves appear larger. Some deep-sea animals employ bioluminescence for camouflage, blending into the faint light from above. Predators such as anglerfish use glowing structures to lure prey, while certain organisms use light to communicate with members of their own species.
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