New and therapeutic agents play a vital role to fight against various diseases prevailing in the present era. The bioactive compounds from the marine algae are known to possess antibacterial, antifungal, antiviral, anticancer properties. Seaweed originates from a natural marine environment had to be tested for their bacterial contamination before consuming it in the raw form. The avoidance and treatment of such pathogens had to be rectified by consuming natural products. One such naturally occurring marine renewable resource is the seaweeds which provide variety of primary and secondary metabolites such as polysaccharides, fatty acids, phlorotannins, phenolic compounds, carotenoids and bioactive compounds with antibacterial, antifungal, antimicrobial activity