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Deep-Sea Dialogues: Bioluminescence
Bioluminescence, the production of light by living organisms, is an incredible natural phenomenon that occurs in several deep-sea organisms (as well as those on land, although less common). This video interview features PhD candidate Rene Martin, who studies the evolution of deep-sea fishes and the "why" and "how" behind bioluminescence.
Credit

Video courtesy of NOAA Ocean Exploration.