(IMAGE) CNRS Caption Distribution and spectral composition of light in the water column, representation of the spectrum of the diatom phytochrome, which can detect information associated with light changes in the ocean. Credit © Carole Duchêne/Chloroplast Biology and Light-sensing in Microalgae Laboratory (CNRS/Sorbonne University) Usage Restrictions non commercial use only License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.