This field trip explores Chilika Lake, Asia’s largest brackish water lagoon, focusing on its geological, ecological, and climatic significance. Located along the Odisha coast, Chilika presents an exceptional natural setting to explore the interplay between geomorphology, climate, and human activity. Chilika is a dynamic ecosystem influenced by riverine and marine processes, with ongoing changes in sediment deposition and water salinity. Participants will explore features such as barrier ridges, estuarine channels, and paleo-sedimentary deposits. The lagoon’s diverse salinity zones and sediment regimes also offer critical insights into coastal dynamics and the growing influence of anthropogenic pressures.