This document summarizes a study on the culture potential of the green mussel Perna viridis along the southern coasts of Kerala, India. The study involved rack culture of mussels in three farms over 172 days. Results showed higher growth and yield in Farm I located farther from the estuary mouth compared to Farms II and III. Water quality parameters like salinity, temperature, pH and dissolved oxygen were found suitable for mussel culture. The study concluded that while productivity was lower than northern Kerala, rack culture demonstrated the potential for further development of commercial mussel farming in the region.