These are strand plain of depositional system. Salt
marshes, Mangroves and Tidal flat over run the intertidalenvironments of Tuticorin harbour (with in the study area) oneither sides of Tamiraparani deltaic region. These environments
are admixture with fine mud, shell material; sand sized terrigenous particle and plants materials. In some areas these environments are converted into salt pans and aqua farms.