Marine Molecules from Algae and Cyanobacteria: Extraction, Purification, Toxicology and Applications addresses biomolecules, their roll in living organism, structure elucidation, sources, important characteristics and their industrial applications for educational (academic) and industrial purposes. The book covers all methodologies used in the search of marine natural products, including screening of marine molecules by chemical methods like HPLC, LC-MS/MS, and more. These chemical compounds range from small molecules and enzymes to highly complex secondary metabolites that show bioactivities in physiological systems. Many of these compounds are not commercially available, so the isolation methods of these molecules from microalgae, seaweeds and cyanobacteria is challenging. Because of the complexity of their structure, the total synthesis has been shown to be difficult. Developing protocols to obtain reference standards from natural sources have shown satisfactory results in the chemical industry. The marine environment is a rich but underexploited source of commercially interesting natural products with different applications. Several marine organisms, such as seaweeds, microalgae, sponges, cyanobacteria, ascidians and fungi are sources of natural valuable molecules.