Bioluminescence

Bioluminescence is the ability of some lifeforms to produce and emit light. On Earth, various fungi and other small lifeforms, such as fireflies, gave off light.

In 2151, the Enterprise visited the planet of Dakala and the crew saw a centipede emitting light. 

At the first Annual Voyager Science Fair on the USS Voyager, in 2376, Mezoti presented a transparent box containing soil and a colony of luminescent Teirenian ants. She had infused the soil with a blue ion dye so the insects would be easier to see. 

Risa had subterranean gardens in which all the plants were luminescent. . Gedi Prime contained waterfalls glowing with bioluminescence, a popular tourist destination.