This paper presents the results of modeling of spectra of light scattering and absorption coefficients in sea water polluted with crude oil suspension. In the Mie theory, which has been applied for calculations, the results of the measurements of the size distribution spectra in artificial crude oil suspensions in sea water were used as well as the results of the measurements of the components of the complex light refraction index of crude oil from the Baltic Sea (Petrobaltic type). The comparison of the spectra obtained with those which are characteristic for the waters in the Gulf of Gda.sk confirmed that the admixture of emulsion with about 2 ppm of crude oil doubles the light scattering coefficient. The same effect, with respect to the light absorption coefficient, is obtained when the concentration of the crude oil suspension is about 100 ppm.