The paper presents the results of aquatic macroinvertebrates community analyses of the Milesevka river (Lim river watershed; Sava river basin) with aim to evaluate saprobiological status. Sampling was carried out on five localities during 2005. A diverse community (62 taxa) has been recorded during the investigation. Results of saprobiological investigation indicate satisfactory water quality, which is, according to national legislative, within 1st and 2nd quality class.

Investigation of the echinoderms fauna in the benthic biocoenosis on the Montenegrin shelf is conducted during 2007. Total number of 50 species is identified and they are grouped into 5 classes. Specific conditions of the south Adriatic cause presence of eight termophilic species. Inside collected materials were eight Mediterranean endemics and two submediterramean endemic species. Diversity and quantity of the registered species depend of physical-chemical water conditions, bottom type as well as anthropogenic impact.