# Ultraviolet bioluminescence

Bioluminescence is badass. It involves living beings emitting bright light in the visible spectrum.

Would it be, though, possible that a lifeform emits UV (ultraviolet) light? Does it occur in reality, maybe?

What are the requirements for it to happen?

Feasibility is more complicated. The mechanism2 is $$\text{L}+\text{O}_2+\text{ATP}\to\text{oxy-L}+\text{CO}_2+\text{AMP}+\text{PP}+\text{light}$$ as mediated by the enzyme luciferase using one of the luciferin pigments. Essentially, the luciferin changes from an excited state to a ground state. Now, we can postulate the existence of a luciferin with an energy difference between these two states exactly right to produce one or more UV photons; in fact, Biology: The Unity and Diversity of Life claims that "some even emit ultraviolet or infrared light" but doesn't specify which luciferins it is referencing.