What are bioluminescent chemicals?

Answer:
Bioluminescent chemicals are organic molecules that emit light (photons) under specific conditions that occur in the originating animal's natural habitat. Examples of this include the firefly/lightning bug in the United States and many organisms that reside in the deep ocean.
First answer by SummerMaple. Last edit by SummerMaple. Contributor trust: 63 [recommend contributor recommended]. Question popularity: 1 [recommend question].