Straits Connecting Black, Marmara and Aegean Seas – July 23rd, 201140.6N 28.2E
While the Aegean and Mediterranean Seas (below) are dotted with hundreds of Greek and Turkish islands, few are visible in the Black Sea (upper right).
The Black Sea is connected to the Sea of Marmara (center) via the Bosphorus Strait, with the city of Istanbul located on either side. The Sea of Marmara is then linked to the Aegean Sea through the Dardanelles.
In the upper left quadrant, the Danube River can be seen flowing along the border of Romania (above) and Bulgaria (below), to its delta on the shores of the Black Sea.