The Baltic Sea is unique in terms of its location, salt concentration, islands and living organisms.
The water type of the Baltic Sea is called brackish water. It is a mixture of salt water and fresh water. This water type accommodates a unique mixture of saltwater and freshwater species.
The most important threats to the Baltic Sea's ecosystem include pollution and nutrient-caused eutrophication, extensive fishing, lack of oxygen and frequent ship and boat traffic.
Key words: the Baltic Sea, the Gulf of Finland, the Gulf of Bothnia, salt concentration, brackish water, eutrophication.
The Baltic Sea is unique in terms of its location, salt concentration, islands and living organisms.