Do baltic sea has the highest salinity?

The Baltic sea does not have the highest level of salinity. In fact, it is one of the lowest salinity seas in the world. This is due to the fact that the Baltic sea is connected to the North Sea and Atlantic Ocean by narrow straits, which limits the amount of salt water that can enter the Baltic sea. The Baltic sea also receives a large amount of fresh water from rivers, which further dilutes the salt content. The average salinity of the Baltic sea is about 8 parts per thousand, compared to the average ocean salinity of about 35 parts per thousand.