Abstract
Growth of algae and seaweed via creation of bio films or bio fouling on the surfaces leads to different problems. Different methods have been used for controlling the bio fouling so knowing and evaluation of these methods and assessment and analyzing of their benefits and disadvantages are necessary. In this article, different anti fouling coatings containing nontoxic biocides and also coatings containing nano materials, have been studied and a prospective about the using of these materials in the future have been presented.