p. 201 - 208 CULTURE EN MASSE DE L'ALGUE NANNOCHLORIS OCULATA F. ATOMUS (DROOP) DANS L'EAU DE MER Mariana Popa et Elena Ghitescu Institute Roumain de Recherches Marines Constanta Abstract This paper aims to develop on as efficient as possible technology for cultivating the alga Nannochloris oculata f. atomus (DROOP). The bio- logical and chemical modifications of this alga have been noted in varians culture media. The results of the experiments have pointed out the good plasticity of this alga concerning the salinity, temperature and light conditions, so that it can be recommend for big cultures in the Black Sea.