13 Million Species of Life

The biologist E.O. Wilson estimates there are about 13 million species, broken down as follows:Insects 9 millionBacteria 1 millionFungi 1 millionViruses 0.3 millionAlgae 0.3 millionWorms 0.3 millionPlants 0.2 millionProtozoa 0.2 millionEchinoderms 0.2 millionMollusks 0.2 millionCrustaceans 0.2 millionFish 30 thousandReptiles 10 thousandBirds 10 thousandAmphibians 5 thousandMammals 5 thousandVia