1. The Arctic realm; 2. The Palearctic realm; 3. The Afrotropical realm; 4. The Madagascan realm; 5. The Indo-Malaysian realm; 6. The Papua-Melanesian realm; 7. The Australian realm; 8. The Polynesian realm; 9. The Nearctic realm; 10. The Caribbean realm; 11. The Neotropical realm; 12. The Patagonian realm; 13. The Antarctic realm; 14. The Oceanic realm; 15. Global balance.