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
Navy Region Europe, Africa, Southwest Asia Navy Region Europe, Africa, Southwest Asia Navy Region Europe, Africa, Southwest Asia (EURAFSWA) is one of eleven current naval regions responsible for the operation and management of Naval shore installations and assigned staff in the European, African and Southwest Asian theaters of operation. EURAFSWA provides the shore support to the United States Naval Forces Europe-Africa, however it is a part of Commander, Navy Installations Command (CNIC). Due to its large area, the region is one of the three CNIC regions commanded by a two star Rear Admiral, currently RADM Rick Williamson, and is headquartered on Naval Support Activity Naples Italy.