Bioluminescence, the ability of organisms to produce and emit light, is a mesmerizing phenomenon found across a wide range of marine life, from surface waters to the depths of the ocean. In fact, bioluminescent organisms are reported to be far more prevalent in the ocean than on land. Typically, the light emitted by these marine creatures appears blue-green to the human eye, leading to the assumption that there is little variation in its color. However, even subtle differences in the wavelength of bioluminescent light can significantly impact its ability to penetrate seawater—a factor critical for underwater visibility and communication.

Our research focuses on the “color of light” produced by bioluminescent bacteria. We are delving into the ecological roles of their light emission, as well as the evolution of their luciferase gene sequences and genomes. Through this work, we aim to unravel the intricate relationship between light color, ecological function, and evolutionary dynamics in these remarkable organisms.