A Fitbit for Mussels (IMAGE) North Carolina State University Caption Researchers at North Carolina State University have designed and demonstrated a new system that allows them to remotely monitor the behavior of freshwater mussels. A prototype of the system is shown here. The system could be used to alert researchers to the presence of toxic substances in aquatic ecosystems. Credit James Reynolds, NC State University Usage Restrictions Photo credit must be given. 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.