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.

Based on all available data a review of introduced non-indigenous species is reported for the area of Montenegrian coastal sea (South-East Adriatic Sea). All together 11 species were recorded, three algae and eight animals. Monitoring of invasive species has been done partially only for Caulerpa racemose var. cylindracea, while for other species distribution and impact on autochthonous environment is unknown.

Monitoring of ecological condition of the coastal sea of Montenegro has been carried out extensively since 1963 along with foundation of the Institute of marine Biology in Kotor (Montenegro). Recently, in accordance with recommendations of the Barcelona Convention, the LBS Protocol, the EU Framework Directive for coastal waters and domestic laws, in recent years has been carried out continuous monitoring of quality water, sediments, biota as well as ecological effects of pollution on constant monitoring positions in this southeastern part of the Adriatic. In this paper was given an over view of activities and the plan of long-term continuous monitoring of environmental quality and ecological condition of the coastal sea of Montenegro.