Red Sea Seaweeds (IMAGE) King Abdullah University of Science & Technology (KAUST) Caption Macroalgae like this seaweed sequester carbon and can sink to deep depths of the ocean. Credit © 2019 KAUST 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.