Thickly populated West Bengal coast adjacent to tide dominated Ganges/Sunderban Delta is facing problem due to unplanned fishing tourism industries or exploitation of resources. Episodic physical events like storm damage, climatic change, sea level rise, coastal erosion is causing great societal problems and needs close monitoring. Planimetric changes of beaches were monitored by Profiling with study of coastal processes,sedimentological and mineralogical studies in the laboratory. Erosional accretional trend were calculated from the growth rate of polychate burrow Diopatra cuprea. The causes of erosion were highlighted and preventive measures were suggested. The different aspects of Coastal Zone Mangements have been clarified for sustainable development. The bewildering array of trace fossils and biogenic structures indicated application potential of Ichnology in solving geological or environmental problems. Relict mangrove forest in the beaches is an indication of paleoshoreline.The present work is an excellent example of through understanding of the various scientific thoughts in solving societal problems in the coastal zone and their solutions by various geological studies.