Survey Gear (IMAGE) Johns Hopkins University Caption A ferry crewman works with gear used in the Continuous Plankton Recorder survey, an ongoing study of plankton in the North Atlantic and North Sea launched by a British marine biologist in the early 1930s. Credit Sir Alister Hardy Foundation for Ocean Science 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.