Calcein-stained oyster larvae (IMAGE) Dauphin Island Sea Lab Caption Oyster larvae stained with the fluorescent dye "calcein" Credit Haley Nicholson Gancel 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.