South Africas southern capes mark the shifting boundary of the Atlantic and Indian oceans. The frontier is usually considered the vicinity of Cape Agulhas, which lies southeast of the more well-known Cape of Good Hope. At Cape Agulhas, the western boundary current of the Indian Ocean Gyre (a rotating belt of prevailing open-ocean currents), the Agulhas, flows southward against the northward the trajectory of the Benguela Current, the eastern boundary current of the South Atlantic Gyre. Such current boundaries make for volatile, fertile marine conditions, drawing up nutrient-rich waters from the depths. Visitors to Agulhas National Park can sample the stormy scenery at this grand meeting of the waters.