Flash Mob! Glowing in Fishes More Widespread Than Thought

And since the first of these creatures lit up the seas about 150 million years ago, the ability to produce light — known as bioluminescence — evolved across fish species far more often than scientists suspected, according to a new study. Researchers analyzed lineages of glowing fishes, tracing them back to their origins in the early Cretaceous period (145.5 million to 65.5 million years ago). And there are likely many more instances of evolving bioluminescence radiating throughout th