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
World Network of Biosphere Reserves in Europe and North America World Network of Biosphere Reserves in Europe and North America Under UNESCO’s Man and Biosphere Reserve Programme, there are 302 biosphere reserves recognized as part of the World Network of Biosphere Reserves in Europe and North America (as of April 2016). These are distributed across 36 countries in the region. Biosphere reserves operating under the UNESCO Man and the Biosphere Programme aim to achieve three mandate management objectives of conservation, sustainable socio-economic development, and logistic support. Below is the list of biosphere reserves in Europe and North America, organized by country/territory, along with the year these were designated as part