Razor Clam Diggers in Washington (IMAGE) NOAA Headquarters Caption Domoic acid, produced by certain types of marine algae, can accumulate in shellfish, fish and other marine animals. Public health agencies and seafood managers closely monitor toxin levels and impose harvest closures where necessary to ensure that seafood remains safe to eat. Credit NOAA 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.