During the DEMO: “Knowledge and use of macroalgae: an unexpected resource!” The group made up of Damiano Spagnuolo, Antonio Manghisi, Marina Morabito and Giuseppa Genovese, will present an overview of the world of macroalgae; from the illustrations for recognitioning to the passages that lead to a first extract used in the research field, and finally, the innumerable commercial products. Furthermore, it will be emphasizing how the cultivation of macroalgae can have a positive impact on the environment. During the QUIZ: participants will be asked through some games, in a completely informal way, what has been viewed and below in the previous section.