A pink berry about 3 mm in diameter (IMAGE) Marine Biological Laboratory Caption A pink berry about 3 mm in diameter, the pink color is from the Thiohalocapsa PSB1 cells which are held together with a clear exopolymer "goo." Credit Scott Chimileski Usage Restrictions Use with credit 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.