Predator and Prey (IMAGE) Brown University Caption Marine ecologists at Brown University have found that barnacles thrive in strong upwelling sites in the Galapagos Islands, and are an important food source for predators such as whelks (shown in picture), a kind of sea snail. Credit Jon Witman, Brown University 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.