Well at any one time there might be a known number of species. But there is this continued dynamic of extinction and the finding of new species. You see a total number of all species given at 2 or 3 million, which I think is off the mark. There are some estimates of as many as 50 million species.
The IUCN did a species survey in 2004.
Number of known bird species worldd wide: 9717
Number of known mammal species world wide: 5416
Number of known fish species worl wide: 28500
Number of known insect species world wide: 950000
That survey is four years old so those numbers have changed a little. But at least it gives you an idea for the total numbers of known species. There are many more yet to be discovered. I suggest to anyone really interested, read the entire IUCN report.
The IUCN did a species survey in 2004.
Number of known bird species worldd wide: 9717
Number of known mammal species world wide: 5416
Number of known fish species worl wide: 28500
Number of known insect species world wide: 950000
That survey is four years old so those numbers have changed a little. But at least it gives you an idea for the total numbers of known species. There are many more yet to be discovered. I suggest to anyone really interested, read the entire IUCN report.
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