What is the world's largest fish?
The harmless whale shark holds the title of largest fish, with the record being a 59 footer captured in Thailand in 1919.
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- About how many species are estimated to exist on Earth?
“About 8.7 million eukaryotic species. Scientists estimate around 86% of land species haven't even been described yet.”
Reference: Mora et al., *PLOS Biology* (2011)
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