5 Most Biodiverse Countries in the World

1. Brazil

Global Biodiversity Index: 512.34

Brazil holds the title of being the most biodiverse country in the world. It also claims the top spot among the world’s 17 megadiverse countries and ranks second only to Indonesia in terms of species endemism. Within its borders lie two pivotal biodiversity hotspots—the Atlantic Forest and the Cerrado—along with six terrestrial biomes and three expansive marine ecosystems. The country currently boasts knowledge of at least 103,870 animal species and 43,020 plant species, collectively constituting a staggering 70% of the world’s documented animal and plant species. It is estimated that Brazil is a sanctuary for between 15-20% of the world’s biological diversity, hosting the highest number of endemic species worldwide. Brazil’s biodiversity continues to expand, with an average discovery of 700 new animal species each year.

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