The Indian Sundarbans, being a distinctive deltaic terrain, has intricate relationships among geomorphological, hydrometeorological, and geological processes. This chapter attempts to investigate and demystify these relationships to present a holistic perspective of the dynamic geo-environmental processes of the region. Geomorphologically, the Sundarbans are influenced by deposition of sediments, tides, and fluvial interactions, resulting in perpetual modifications of the coastal morphology. Hydrometeorologically, the area is regularly hit by extreme weather conditions, such as tropical cyclones and excessive rain, heightened by the effects of climate change that affect the natural environment and human settlements. Geologically, the coastal structure of the area is regularly affected by its erosion and accretion and by changing sediment types that result in moving landforms. This multidisciplinary study brings together remote sensing information, ground measurements, and climatic models to examine the dynamically changing problems of the Sundarbans, including shoreline erosion, salinity invasion, and loss of habitat. The results provide essential inputs for sustainable management measures, building resilience, and conservation efforts, with a focus on an integrated approach to protect this ecologically rich and fragile area.