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 basin) 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 basin) Colorado River Basin (South America) 05 (Drainage basin) Paraná River Basin (South America) 06 (Drainage basin) São Francisco River Basin (South America) 07.1 (Drainage basin) Tocantins River Basin (South America) 07.2 (Drainage basin) Amazon River Basin (South America) 08 (Drainage basin) Orinoco River Basin (South America) 09 (Drainage basin) American Mediterranean Sea Basin (America) 10 (Drainage basin) 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 basin) North Sea Basin (Europe) 16.08 (Strait) Skagerrak (Europe) 16.09 (Bay) Kattegat (Europe) 16.10 (Drainage basin) Baltic Sea Basin (Europe) 17 (Bay) Bay of Biscay (Europe) 18.1 (Strait) Strait of Gibraltar 18.2 (Drainage basin) Eurafrican Mediterranean Sea Basin 19 (Drainage basin) Senegal River Basin (Africa) 20.0 (Bay) Gulf of Guinea (Africa) 20.1 (Drainage basin) Volta River Basin (Africa) 20.2 (Drainage basin) Niger River Basin (Africa) 21 (Drainage basin) Congo River Basin (Africa) 22 (Drainage basin) Orange River Basin (Africa)