In this investigation the percentage of root colonization and spore density of Vesicular Arbuscular Mycorrhizae in dominant vegetation of eighteen salt marsh plants and physic-chemical parameters of rhizophere soil were studied at South East Coast of Tamilnadu, India. Among the eighteen plants, three salt marsh plants namely, Agiceras nicutaum L., Salicornia virginica L and Salicornia brachiata L showed AM fungi root colonization and spore density richness. From the three study sites of coastal area, the ten species of AM fungi were noticed in rhizosphere soil and root of salt marsh plants, which are belonging to four genera viz., Glomus, Acaulospora, Gigaspora and Scutellospora.