Gracilaria, a genus of red macroalgae (IMAGE) Florida Atlantic University Caption Brian Lapointe, Ph.D., senior author and a research professor at FAU Harbor Branch, holding Gracilaria, a genus of red macroalgae, in Florida’s Indian River Lagoon. Credit Brian Cousins, FAU Harbor Branch Usage Restrictions Credit: Brian Cousins, FAU Harbor Branch 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.