Bioluminescent algae are tiny marine organisms that can produce light through a chemical reaction. This phenomenon occurs mainly in certain species of dinoflagellates, which are a type of plankton. When disturbed, these algae emit a blue-green glow, creating stunning displays in oceans and coastal waters, especially at night. The light produced by bioluminescent algae serves various purposes, such as deterring predators and attracting mates. These organisms thrive in warm, nutrient-rich waters and can often be found in areas with low light pollution, making them a fascinating subject for scientists and nature enthusiasts alike.