The Baltic Sea is one of the biggest brackish seas in the world with limited exchange with the open sea through the Danish straits. The salinity of the Baltic Sea east of 13°E ranges between 13 g/kg at the bottom in the central Baltic Sea and 2 g/kg at the surface in the Bothnian Bay (cf. Figure 1).
Does the Baltic Sea have low salinity?
The Baltic Sea’s salinity is much lower than that of ocean water (which averages 3.5%, or 35 parts per thousand), as a result of abundant freshwater runoff from the surrounding land; indeed, runoff contributes roughly 1/40th its total volume. (Alhonen 88) It varies from 0.1% in the north to 0.6-0.8% in the centre.
Why is Baltic Sea less salty?
The unique Baltic Sea. The Baltic Sea is the youngest sea of our planet. … Due to massive freshwater runoff from the land and limited salt water inflows from the Danish straits, the salinity of the Baltic Sea is much lower than that of the oceans, and the water is considered to be brackish water instead of sea water.
Which sea has lowest salinity?
The Arctic Ocean’s salinity varies seasonally as the ice cover melts and freezes; but it is the lowest on average due to low evaporation and heavy freshwater inflow from rivers.
What lies at the entrance of the Baltic Sea?
The large islands of Bornholm (Denmark) and Öland and Gotland (Sweden) lie in the western Baltic, while the Åland Islands (Finnish: Ahvenanmaa), farther north, rise from a narrows between Sweden and Finland and mark the entrance to the arm of the Baltic known as the Gulf of Bothnia.
Can you swim in the Baltic Sea?
The Baltic sea water is cool, but not cold at summer. … The beach is safe, and you cannot swim so far, because you will kick some sea-rocks when you go far away from the shore. The water is shallow, just go to try it, no harm.
Are there sharks in the Baltic Sea?
Contrary to popular belief, there are sharks in the Baltic Sea. In fact, 31 species of sharks and closely related skates, rays and chimaeras (collectively known as cartilaginous fishes) have been recorded in this area.
What is the highest salinity?
The most saline water body in the world is the Gaet’ale Pond, located in the Danakil Depression in Afar, Ethiopia. The water of Gaet’ale Pond has a salinity of 43%, making it the saltiest water body on Earth; (i.e. 12 times as salty as ocean water).