Observing Salps (VIDEO) U.S. National Science Foundation This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Salps drift, sometimes in long chains, in the open ocean. There they are the sea's most efficient filter-feeders, grazing on food particles from large to small. Credit Kelly Sutherland; Larry Madin; Roman Stocker, WHOI/MIT 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.