Bioluminescent algae are tiny marine organisms that can produce light through a chemical reaction. This natural phenomenon occurs mainly in certain types of dinoflagellates, which are a group of single-celled algae. When disturbed, these algae emit a blue or 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 coastal areas, where their glowing effects can be seen during events like red tides or when waves crash against the shore.