A branch of the North Atlantic Current flows southwestward and then around the Canary Island. This current, which is named after the archipelago “Canary current”, is characterized by a cool temperature. Here a phenomenon called upwelling occurs: due to winds deep waters, which are cooler and richer in nutrients, move towards the surface. In this way they replace the surface waters, which are warmer and poorer in nutrients. Upwelling has consequences of marine ecosystems, affecting fisheries. At the Canary Islands regional facility stratification and circulation of water and biogeochemical cycles are investigated.