The statistic above represents the number of species on earth as of 2018, broken down by vertebrate group and biogeographic realm. In 2018, there were some species of birds and *** species occupying the Afrotropical realm.
Profit from the additional features of your individual account
Currently, you are using a shared account. To use individual functions (e.g., mark statistics as favourites, set
statistic alerts) please log in with your personal account.
If you are an admin, please authenticate by logging in again.
Learn more about how ÌÇÐÄÆƽâ°æ can support your business.
WWF. (October 30, 2018). Number of terrestrial and freshwater species as of 2018, by vertebrate group and biogeografic realm [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 04, 2026, from /statistics/343465/number-of-species-on-earth-by-vertebrate-group-and-biogeografic-realm/
WWF. "Number of terrestrial and freshwater species as of 2018, by vertebrate group and biogeografic realm." Chart. October 30, 2018. ÌÇÐÄÆƽâ°æ. Accessed August 04, 2026. /statistics/343465/number-of-species-on-earth-by-vertebrate-group-and-biogeografic-realm/
WWF. (2018). Number of terrestrial and freshwater species as of 2018, by vertebrate group and biogeografic realm. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 04, 2026. /statistics/343465/number-of-species-on-earth-by-vertebrate-group-and-biogeografic-realm/
WWF. "Number of Terrestrial and Freshwater Species as of 2018, by Vertebrate Group and Biogeografic Realm." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 30 Oct 2018, /statistics/343465/number-of-species-on-earth-by-vertebrate-group-and-biogeografic-realm/
WWF, Number of terrestrial and freshwater species as of 2018, by vertebrate group and biogeografic realm ÌÇÐÄÆƽâ°æ, /statistics/343465/number-of-species-on-earth-by-vertebrate-group-and-biogeografic-realm/ (last visited August 04, 2026)
Number of terrestrial and freshwater species as of 2018, by vertebrate group and biogeografic realm [Graph], WWF, October 30, 2018. [Online]. Available: /statistics/343465/number-of-species-on-earth-by-vertebrate-group-and-biogeografic-realm/
