We are here on the skerry-coast of Bohuslän, a coastal region in Sweden between Göteborg and the Norwegian border. Skerries are small rocky islands, modeled by the glaciers during the ice ages, lying in coastal areas with shallow and often brackish water. After the melting of the ice-cap, these islets rose above the surface of the water. The influence of both ice and water explains their polished, rounded shape. Skerries are found here, i.e. along the Skagerrak, but also in the Baltic Sea and the Botnian Gulf in Sweden and Finland, as well as along almost the entire coastline.of Norway. In Russia lie the relatively unknown Minina skerries in the Kara Sea, a part of the Arctic Ocean.