Ocean Life (IMAGE) Columbia Climate School Caption Symbiotic bacteria inside microscopic life forms called diatoms take nitrogen from the air, enabling them to thrive in the nutrient-poor tropical Atlantic. Credit David Caron 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.