Bioluminescence first evolved in animals at least 540 million years ago Bioluminescence first evolved in animals at least 540 million years ago in a group of marine invertebrates called octocorals, according to the results of a new study. The study focuses on an ancient group of marine invertebrates that includes soft corals, pushes back the previous oldest dated example of trait by nearly 300 million years.
https://www.sciencedaily.com/r....eleases/2024/04/2404