Nanotechnology has many implications in our day today life with its core being the synthesizing of nanoparticles. The synthesis of nanoparticles is significant because of its application in the biomedical field. The biological means of synthesizing nanoparticles are more advantageous than the physical and chemical methods, as it involves simple methodology that are non-toxic and obtained at a minimum cost. The biological synthesis implies the use of plants, plant parts and different microorganisms. Marine life has always been a unique source of bioactive compounds with tremendous impact in the field of medicine and pharmaceutics. The marine ecosystem has captured a major attention in recent years, as they contain valuable resources that are yet to be explored much for the beneficial aspects of human life. This review focuses on the biological synthesis of nanoparticles from the huge diversified marine ecosystem, including, variety of species like bacteria, algae, fungi, yeast and sponges.