Sea lamprey found in the northern and western Atlantic Ocean along the shores of Europe and North America, in the western Mediterranean Sea, the Black Sea, and in the shores of the Great Lakes. They have been found at depths to 4000 m and tolerate temperatures between 1.0 and 20 °C. The largest European populations of sea lampreys are located throughout the south-western areas of Europe (north-central Portugal, north-northwest of Spain, and west–south-west of France). These countries also support the main fisheries of the species. Sea lampreys are anadromous. From their lake or sea habitats, they migrate up rivers to spawn (followed
United States presidential visits to Eastern Europe and Northern Asia United States presidential visits to Eastern Europe and Northern Asia Ten United States presidents have made presidential visits to Eastern Europe and Northern Asia. The first trip by an incumbent president to Eastern Europe was made by Franklin D. Roosevelt in 1945, to the Soviet Union, and was an offshoot of Allied diplomatic interactions during World War II. The first trip by an incumbent president to Northern Asia was made by Gerald Ford in 1974, also to the Soviet Union, and was an offshoot of U.S.–Soviet Détente during the Cold War. The first presidential visits to other Eastern European countries