This paper presents results of measuring the contents of certain bio-indicators in samples of digestive gland and lung of mussels (Mytilus galloprovincialis). The results were obtained in the framework of the Program for monitoring ecological status in Montenegro during the 2009 and 2010 year. Biomonitoring program was conducted in accordance with the LBS Protocol (Protocol on the Protection of the Mediterranean Sea against pollution from land-based sources and land activities) and the criteria MED POL Programme (Mediterranean Pollution Control), which is compliant with the requirements of the European Environment Agency (EEA) and has established a system of reporting and data exchange with the EEA. The program includes the analysis of biomarkers in Mytilus galloprovincialis (Lamarc, 1819) (mussels), and dynamic sampling is 2 times a year (March and September). In order to assess the spatial distribution and temporal trends of pollution, followed by the response of various biomarkers presented at two positions in the coastal waters of Montenegro (Dobrota and Bijela) and three positions in Slovenia (bays Piran, Strunjan and Koper). Biomarker responses showed no difference between the positions of the different ecological status.

Concentration of lead (Pb), lame (Cr), copper (Cu) and cadmium (Cd) were detrmined in Cystoseira algae collected from the Montenegrin mediolittoroal, during the spring 2007. Samples of three species of Cystoseira algae (C. amentacea, C. barbata and C. compressa) were analyzed in order to have information on bioaccumulation of these elements and possibility to use these algae as biomonitors for heavy metal pollution. The data obtained for heavy metals were similar with other area of Mediterranean Sea, with exception for significantly higher concentration of copper, on Budva location.

The study aims to examine source apportionment of heavy metals of the surface sediments in the less than 63 micro m size fraction. An assessment of metals marine pollution was done in the sediment collected from ten locations along Montenegrin coast. The samples were dried and acid-digested and the metal contents (Fe, Mn, Cu, Zn, Cr, Co, Ni) were determined using a flame atomic absorption spectrometry. The results were compared with the literature data from Mediterranean countries.

Species belong to class Holothuriidae play significant role in the transmission of energy within the sea bottom biocoenoses. Their abundance and distribution have high impact on the biocoenoses dynamic and at the same time it can be use as indicator of the anthropogenic influence on marine environment. Data present in the paper are results of the investigation of their distribution on the Montenegrin shelf and comparison with neighboring area. Obtained results show presence of six species, and two of them are for the first time recorded for a given area.

The paper presents the results of diversity and distribution of thermophilic species of echinoderms in the continental shelf on Montenegro coast. The data show that explored area inhabited by eight species of which the sea cucumber Holothuria (Platyperona) sanctori for the first time is recorded and is new species for the fauna of Montenegro. Based on the fact that climate change affects the temperature rise of the sea water, especially the coastal area, the aim of this study was to determine the presence of thermophilic species of echinoderms, which can be the basis for further monitoring and tracking changes in the benthic biocoenosis of the southern Adriatic.

In this paper the results of preliminary investigations of microbiological quality of seawater and sediment are presented. Analyses are performed by membrane filtration. The samples were collected near the sawage outfalls in Bokakotorska bay. It is noticed much higher number of bacteria – indicators of fecal pollution in sediment surface that seawater overlaying the sediment. Concentrations of bacteria diminished in layers of sediment laying deeper that sediment surface. Influence of wastewater is the most evident on 1 and 3 positions.

The content of major elements Al, K and Mg was investigated in surface sediment samples from the coastal area of the South-eastern Adriatic, in sediment fraction less than 2 mm. Obtained results were used to present horizontal spatial distribution of these elements in sediment of the area studied. The spatial distribution of elements showed similarities in the behavior of Al and K, while the distribution pattern of Mg in sediment was contrary to Al and K. It can be noticed that the sediment composition in terms of these elements reflects the geological characteristics of the continental hinterland in the South-eastern Adriatic coastal zone.

The concentrations of heavy metals (Cu, Zn, Cr, Pb, Cd and As) were measured in sea water and mussels at location in the Boka Kotor Bay which selected as result of increased anthropogenic impacts from land. Sampling was performed at three locations, Sv. Stasije, Herceg Novi and Žanjice in the fall 2006 and spring 2007. The majority of the microelements registered in higher concentrations in fall samples in 2006 than in spring samples 2007. The concentration of metals in the studied samples was present at different levels, and is beloved the maximum level allowed, except for yinc and lead in some locations.

The fact is that in the world today water and land represents limited life resources which are more and more degrade and disturbed, mostly by anthropogenic influence. Especially water (seas, rivers, lakes) is exposed to various types of pollution. The fact is that in the world today water and land represented limited life resources which are more. That why in present time we conduct numerous scientific researches to examine, advance and protect our environment, especially water as a limited and delicate natural resource. In this work results from April to September 2011 are presented, which comprised analyses of samples from 8 stations in Boka Kotorska Bay. The main aim was to estimate trophic level, of determining the concentration of the physico-chemical parameters, chlorophyll a and TRIX index in Boka Kotorska Bay.

The papar deals with the possibility of different types of seas protection from ballast waters, starting with administrative measures up to the technologies proposals by which those waters could be treated. The problem of ballast waters in the Montenegrin part of Adriatic Sea is in focus in this paper, and the proposal for protection measures are elaborated.