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Several white specks in the waters of the Strait are boats or ships. The Wrangel and Stenbock Palaces and the Riddarholmen Church in central Stockholm.
In addition to numerous smaller lakes that are generally aligned in a north-south orientation, two large lakes - larger Lake Vanern and Lake Vattern - can be seen toward the northern edge of the photograph.
The dark green area inland from the coast is forested lands. In the style of Van Gogh's painting "Starry Night," massive congregations of greenish phytoplankton swirl in the dark water around Gotland, a large Swedish island in the Baltic Sea, shown in this false-color satellite image.
Phytoplankton are microscopic marine plants that form the first link in nearly all ocean food chains.
Population explosions, or blooms, of phytoplankton, like the one shown here, occur when deep currents bring nutrients up to sunlit surface waters, fueling the growth and reproduction of these tiny plants. In 1991, the governments of Denmark and Sweden agreed to build a bridge to connect the two countries across the Oresund Strait.