An American Nature Documentary Series
Scientists have recently estimated that there are approximately 8.7 million species on Earth. They believe that 1-2 million of those species are animals. And what do we know about all those species? Not much! The same study estimates that 86% of all land species and 91% of all sea species have not yet been discovered or described!
Story added by user_239970 on February 17, 2024
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