While some protected parts of the Baltic Sea are covered with clear and solid ice, most of the Baltic Sea is still open. So is the bay Kalmholmsfjärden, my nearest access to the sea. At the shore of the shallow end however the water starts to freeze over. The so-called pancake ice is formed – floating ice floes that spin around, grind off their corners and therefore get a circular shape. When it’s cold enough they will freeze together, but wind, waves and changes in sea level can break them apart again.