Baltic Sea

ocean · geography · brackish water · Europe

Brackish Water Mix. The Baltic Sea is the world's biggest brackish water basin, meaning it's a blend of salt water from the ocean and fresh water from rivers. This special mix makes it different from most other seas.

Nine Countries Border It. Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, and Sweden all touch the Baltic Sea's shores. It's like a shared neighborhood for nine different nations.

Part of the Atlantic. Even though it feels like its own sea, the Baltic is actually an arm of the much larger Atlantic Ocean. It connects to the North Sea through narrow straits between countries.

Surrounded by Plains. The North and Central European Plain regions stretch around the Baltic Sea, creating flat, fertile lands perfect for farming and forests. These plains shape how people live near the sea.