Cyanobacteria Photosythesis (IMAGE) Penn State Caption When cyanobacteria live in low-light conditions, such as beneath a pond surface or under the leaf litter on a forest floor, some are able to switch from using the visible light that is most conducive to their growth and photosynthetic activities to harvesting the weaker, far-red sunlight that filters down to them. Credit Shireen Dooling, Biodesign Institute at Arizona State University Usage Restrictions None License Licensed 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.