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) Biosphere (Earth) - zone of life "marine ecoregions" (Region) Indo-Pacific (Biogeographic realm) Central Indo-Pacific 01 (Biogeographic province) South China Sea 02 (Biogeographic province) Sunda Shelf 03 (Biogeographic province) Java Transitional 04 (Biogeographic province) South Kuroshio 05 (Biogeographic province) Tropical Northwestern Pacific 06 (Biogeographic province) Western Coral Triangle 07 (Biogeographic province) Eastern Coral Triangle 08 (Biogeographic province) Sahul Shelf 09 (Biogeographic province) Northeast Australian Shelf 10 (Biogeographic province) Northwest Australian Shelf 11 (Biogeographic province) Tropical Southwestern Pacific 12 (Biogeographic province) Lord Howe and Norfolk Islands