In the Grass (image) Virginia Institute of Marine Science Caption Thicker seagrass beds provide better nursery habitat for juvenile blue crabs. Credit Photo by Gina Ralph/VIMS. Usage Restrictions One-time use only. 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.