Bioluminescence

Bioluminescence bi·o·lu·mi·nes·cence /ˌbīəˌlo͞oməˈnes(ə)n(t)s,/ Noun

the emission of light from a living organism as the result of a chemical reaction occurring within it

“In the ocean, bioluminescence is the rule rather than the exception.”

– Edith Widder (1951 – )