Bioluminescence—the natural emission of light by living organisms—is one of nature's most magical phenomena. From glowing jellyfish in the ocean to fireflies in your backyard, this light is produced through a chemical reaction involving luciferin and an enzyme called luciferase.
Marine life dominates the world of bioluminescence, with some fish and plankton using it to attract prey, evade predators, or communicate in the deep sea where sunlight cannot reach. In some parts of the world, such as Mosquito Bay in Puerto Rico, entire stretches of water light up at night due to bioluminescent microorganisms.
Scientists are now studying bioluminescence for innovative uses, including medical imaging, environmental monitoring, and even sustainable lighting solutions.