Recent studies of phycological researches have shown that marine algae should be given with the equal consideration like any other groups of plant kingdom, primarily because these groups of plants also play or can also play a great role in human life when used in a sustainable manner. Thereby, finding of algal resources has evolved to be a chief necessity for phycological research. Along with the biodiversity assessment, comparing those survey works that has already undertaken can provide more information regarding with the establishment of new species, vanishing off of existed species, migration or invasion of species etc. Current paper reviews marine algal wealth along southern coasts of India and the comparative analysis of distribution, occurrence and richness of species along the different coastal areas of the southern coast.

Keywords: Phycological; Marine alga; Invasion.