Oyster Beds (IMAGE) University of Washington Caption An oyster bed during low tide at Mystery Bay State Park on Marrowstone Island in Puget Sound. Credit Julieta Martinelli/University of Washington Usage Restrictions credit required 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.