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The Baltic Sea offers many surprises. The first episode takes us from Denmark, via the Darss Peninsula in Germany and Lithuania’s Curonian Spit to Latvia. In June, hundreds of seals gather on the island of Anholt. In the autumn of 2015, an absolute rarity appeared: a Sowerby’s beaked whale. The Darss peninsula attracts thousands of cranes in the autumn. The Curonian Spit is home to many sea eagles. We end along Latvia’s primal coast. The biggest seal in the Baltic Sea, the grey seal, lives here.