The world contains about 8.7 million species, according to the latest estimate - and it could take more than 1,000 years to identify them all.
Animals: 7.77 million (12% described)
Fungi: 0.61 million (7% described)
Plants: 0.30 million (70% described)
Protozoa: 0.04 million (22% described)
Chromists: 0.03 million (50% described)
http://www.bbc.co.uk/news/science-environment-14616161
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