Baltic Sea as species in 2005 and 2018 respectively, having formerly been confused with more widespread relatives. The tiny Copenhagen cockle ("Parvicardium hauniense"), a rare mussel, is sometimes considered endemic, but has now been recorded in the Mediterranean. However, some consider non-Baltic records to be misidentifications of juvenile lagoon cockles ("Cerastoderma glaucum"). Several widespread marine species have distinctive subpopulations in the Baltic Sea adapted to the low salinity, such as the Baltic Sea forms of the Atlantic herring and lumpsucker, which are smaller than the widespread forms in the North Atlantic. A peculiar feature of the fauna is that it contains a
History of the North Sea Europe that spanned the period from the end of the 14th century to about 1600, marking the transition between Medieval and Early Modern Europe. The majority of commerce took place via maritime shipping due to undeveloped roadways between the 16th and 18th centuries. The east coast of Great Britain operated several ports for intercontinental trade. The European coastal ports supplied domestic goods, dyes, linen, metal products, salt and wine. The Scandinavian and Baltic shoreline provided fish, grain, naval goods, and timber. The Mediterranean area traded dyes, premium cloths, fruits and spices. The Burgundian Netherlands, French Netherlands, Spanish Netherlands and Austrian