bioluminescence

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The light produced by bioluminescence uses the energy from a living organism. Bioluminescence occurs in marine animals, such as loose-jawed fish of the genus Tomopteris; bioluminescence also occurs in land animals, such as the glow worm and the firefly.

Bioluminescence is a chemical energy that is released by some living organisms. Many fish that live in the deep ocean create this kind of light. Fireflies are another well-known example of bioluminescence.