Natura - nature actualia - actual entities Mundus Plinius - physical world Astra Plinius - celestial bodies Universe (Supercluster) Virgo-Hydra-Centaurus Supercluster (Supercluster) Virgo Supercluster (Cluster) Local Group (Galaxy) Milky Way Galaxy veter. (Spiral arm) Orion Arm (Region) Local Bubble Local Interstellar Cloud (Planetary system) Solar System (Planet-satellite system) Earth System (Planet) Earth veter. "spheres" (Earth) (Sphere) Hydrosphere (Earth) - layer of water (Drainage system) Atlantic Ocean Basin 0 (Ocean) Atlantic Ocean 01.1 (Sea) Scotia Sea 01.2 (Strait) Drake Passage 02 "Isla Grande de Tierra del Fuego" 03 "Argentina" (coast) 04 (Drainage system) Colorado River Basin (South America) 05 (Drainage system) Paraná River Basin (South America) 06 (Drainage system) São Francisco River Basin (South America) 07.1 (Drainage system) Tocantins River Basin (South America) 07.2 (Drainage system) Amazon River Basin (South America) 08 (Drainage system) Orinoco River Basin (South America) 09 (Drainage system) American Mediterranean Sea Basin (America) 10 (Drainage system) Saint Johns River Basin (United States: Florida) 11.1.1 (Bay) Cape Cod Bay (United States) 11.1.2 (Bay) Massachusetts Bay (United States) 11.2 (Bay) Gulf of Maine (North America) 11.3 (Bay) Bay of Fundy (North America) 12 "Canada" (Atlantic coast) 13 (Sea) Labrador Sea (North America) 14 (Strait) Davis Strait (North America) 15 (Strait) Denmark Strait 16.01.0 (Sea) Norwegian Sea (Europe) 16.01.1 (Bay) Trondheim Fjord (Norway) 16.02 (Strait) North Channel (Great Britain, Ireland) 16.03 (Sea) Irish Sea (Europe) 16.04 (Strait) St. George's Channel (Europe) 16.05.1 (Sea) Celtic Sea (Europe) 16.05.2 (Bay) Bristol Channel (Europe) 16.06.1 (Strait) English Channel (Europe) 16.06.2 (Strait) Strait of Dover (Europe) 16.07 (Drainage system) North Sea Basin (Europe) 16.08 (Strait) Skagerrak (Europe) 16.09 (Bay) Kattegat (Europe) 16.10 (Drainage system) Baltic Sea Basin (Europe) 17 (Bay) Bay of Biscay (Europe) 18.1 (Strait) Strait of Gibraltar 18.2 (Drainage system) Eurafrican Mediterranean Sea Basin 19 (Drainage system) Senegal River Basin (Africa) 20.0 (Bay) Gulf of Guinea (Africa) 20.1 (Drainage system) Volta River Basin (Africa) 20.2 (Drainage system) Niger River Basin (Africa) 21 (Drainage system) Congo River Basin (Africa) 22 (Drainage system) Orange River Basin (Africa)