Costa Rica: Fauna

Total Number of Known Living Species: Over 500,000 Flora and Fauna

(Numbers are approximate due to various reporting methods by varied qualified organizations.)

  • Fauna: ~400,034 identified species – about 4.5% of the world’s ~8.7 million estimated animal species.
    (About an additional 80,000 species remain unclassified, per scientists’ estimates.)
    • ~300,000 insect species
    • ~1,800 arachnid species
    • ~96,000 marine/salt water and freshwater fish species (95,000* marine species)
      (* Special statistic from Instituto Nacional de Biodiversidad via The Costa Rica News)
    • 894 bird species (including migratory birds)
    • 500 mollusk species
    • 280 reptile species (85% are frogs)
    • 250 mammal species
    • 200 amphibian species
    • 110 crustacean species
    • About 3,540 fauna wildlife are threatened or endangered. (IUCN)

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