Between Finland and Sweden
The Baltic Sea is the youngest ocean in the world and first evolved after the last Ice Age. We think we know everything about it, yet still it has many surprises in store. Wind and waves still shape the shores of the Baltic Sea to this day. The third episode takes us to the Bay of Bothnia. More than double the size of the Netherlands, it is the most unknown region of the Baltic Sea. In the winter, the Baltic Sea freezes over at a length of 300 kilometres. In this 1-metre-thick ice tank, the third species of seal - alongside the grey seal and common seal - copes well with the Baltic Sea. The ringed seal is perfectly adapted to the Arctic winter and carves out breathing holes into the ice. More than 10,000 of the animals still live between Sweden and Finland. The Bay of Bothnia only has a salt content of just 1%, which is why it freezes quicker than other regions of the Baltic Sea. Many rivers disembogue here and “sweeten” the sea. The Tornio is the longest natural river in Europe. It forms the border between Sweden and Finland. Even when frost is severe, the Kukkolaforsen rapids in Sweden never freeze over, otters go hunting here. When it gets dark in the winter, solar winds conjure colourful light effects in the Baltic Sea sky. The Aurora Borealis can be seen in the northern regions of the Baltic Sea as of mid-October. The coast of Lapland is also the home of the reindeer. The Sami’s, reindeer breeders, bring their herds in winter to the Baltic Sea, as the snow is not as deep here as it is further inland and the animals have better access to lichens and mosses. When Lapland’s coast is still frozen, 300 kilometres further south in the Kvarken Archipelago, a special spectacle takes place. Millions of fish head for the coast. Barrier beaches prevent them from reaching the coastal lagoons. They can only spawn where the water is salt-free.
S1E3 50 min
