The countries having a border with Baltic Sea are Denmark, Estonia, Latvia, Finland, Germany, Lithuania, Poland, Russia, and Sweden.
Scandinavian countries like Denmark, Sweden, Norway and Finland have a border with Baltic Sea. Other countries are Poland, Russia, Germany, Iceland, Estonia, Latvia and Lithuania.
Most of the Scandinavian countries have a border with Baltic Sea. Germany and Poland has a border as well.
These countries are either Scandinavian countries or old Soviet Union countries, except Germany and Poland.
As fas as I know, most of the Scandinavian countries and old Eastern bloc countries are bordering to Baltic Sea.