Luke Tornabene with submersible (IMAGE) Smithsonian Tropical Research Institute Caption Research submersibles permit long-duration dives at any depth with panoramic views of underexplored ecosystems. They are also equipped with devices to collect fishes during those dives. Credit D. Ross Robertson, Smithsonian Tropical Research Institute Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.