Mangrove ecosystems in southern India serve as critical coastal resources, supporting ecological balance, economic development, and local livelihoods through services such as fisheries, tourism, and coastal protection. However, these ecosystems are under threat from rapid urbanization, industrial expansion, and climate change, creating an urgent need for comprehensive assessment and sustainable management strategies. This paper aims to conduct a study on an integrated assessment of South Indian mangrove ecosystems by using remote sensing (RS) and geographic information system (GIS) technologies to evaluate ecosystem services, with a particular focus on fisheries, tourism potential, and local livelihoods. Using high-resolution satellite imagery and advanced spatial analysis, this study will help in mapping mangrove distribution, assess habitat health, and quantify key ecosystem services, including carbon sequestration, biodiversity indices, fisheries productivity, and tourism value. RS-GIS integration will allow precise tracking of spatio-temporal changes, identification of anthropogenic pressures, and areas of degradation and provide actionable data for conservation and management. In addition, the economic assessment will incorporate biophysical and socio-economic models to estimate the direct and indirect contributions of mangrove ecosystems to the local economy, particularly in supporting fisheries and ecotourism industries that benefit coastal communities.