Dr. Wassim GUERMAZI, a 43 old, is assistant professor at the faculty of Science of Sfax (FSS), university of Sfax (Tunisia) from 2008. He is member of team of plankton at the laboratory of Biodiversity Marine and Environnement including more than 35 researchers since 2004. His research interests focus on extermophile organisms, particulary those of solar saltern. He studied the Artemia, Fabrea, microlagae through their dynamic, behavior, biochemical composition, caracterization of active biomolecules using several techniques (FTIR, RMN, LCMS, GCMS, ……).