Waddensea of Hamburg Waddensea of Hamburg The Waddensea of Hamburg between Elbe and Weser is a German Biosphere reserve. It was added in 1992 by the UNESCO in their ""man and biosphere"" (MAB). This site is a part of the Wadden Sea on the North Sea coast, about 40 km north of the city of Bremerhaven in the Land of Hamburg. Situated close to the mouth of the Elbe River, it represents an estuary system which is the habitat for the seal Phoca vitulina and a large diversity of birds and fish. The nutrient-rich waters of the Elbe support a high biomass production
Postage stamps and postal history of Hamburg which belonged to Denmark at that time, was delivered by a Hamburg postal agent, as there was a Hamburg postal agency on Heligoland. On 1 January 1852, Hamburg joined the German-Austrian Postal Union. Since 1866, Hamburg was part of the North German Confederation, which took over the postal service in the North German Postal District on 1 January 1868. The first postage stamps of the Hamburg City Post Office were introduced on 1 January 1859. They were rectangular and in the middle was the coat of arms of the city, overlaid with the value number. Below that is the word