Ten amazing facts about the Baltic Sea 

1. The Baltic Sea is the largest brackish water body in the world, meaning that it has a higher salt content than freshwater but a lower salt content than seawater.

The Baltic Sea is home to over 1,700 different species of fish, including herring, cod, and sprat. It is also home to a number of endangered species, such as the European eel and the Atlantic sturgeon.

 The Baltic Sea is a major transportation route for shipping, with ports in countries such as Denmark, Germany, Sweden, and Finland serving as important hubs for international trade.

The Baltic Sea is home to a number of important bird habitats, including the Värnan Archipelago National Park in Sweden and the Curonian Spit in Lithuania. These areas are home to a variety of migratory birds, including swans, geese, and ducks.

The Baltic Sea is home to a number of threatened and endangered species, including the Baltic ringed seal and the bottlenose dolphin. These species are protected by international conservation efforts.

The Baltic Sea is home to a number of important ports, including Hamburg, the second busiest port in Europe, and Gdansk, one of the busiest ports in the Baltic region.

The Baltic Sea has played a significant role in world history. It was the site of major naval battles during World War II, and it has also been a major trading route for centuries.