Intrusions (IMAGE) Brown University Caption The research vessel Alliance lowers a CTD rosette to sample biological communities below the sea surface. In the background is the research vessel SOCIB. Credit Photo by Kausalya Mahadevan. Usage Restrictions Credit must be given to the creator. License CC BY 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.