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 west coast of North America official visit by the British would be some two hundred years later, Drake's action and Cabot's original claim in 1497 were the foundations of British claims to portions of the west coast of North America in the late 18th century. One of the most important consequences of these claims is that charters for the British colonies on the Atlantic coast went from sea to sea, and this was the foundation of the United States claim to its current territory. While the Spanish had dominated development on the west coast of North America for over 200 years since the early 16th