The most accurate census, conducted by the Hawaii’s University in 2018, estimates that a total of 8.7 million species live on the planet. To date, a total of 1.8 million species have been identified and described : Mammals 5,500, Birds 10,000, Amphibians 8,001, Reptiles 10,000 and Insects 925,000.
Species assessments are conducted following a standardized process using the rigorous IUCN Red List Categories and Criteria, ensuring the highest standards of scientific documentation, information management, expert review, and justification.
There are eight IUCN Red List Categories based on criteria linked to population trend, size and structure, and geographic range. Species listed as Critically Endangered, Endangered or Vulnerable are collectively described as threatened.
More than 77,300 species have been assessed on The IUCN Red List. The results are disturbing with several species groups facing a severe threat of extinction. IUCN Red List
A TOTAL OF 8.7 M SPECIES LIVE ON THIS PLANET EARTH
TODAY'S MOST ACCURATE CENSUS OF SPECIES IDENTIFIED