How many different species are there?
![Vagrant spider](https://oldwww.landcareresearch.co.nz/__data/assets/image/0019/36460/varieties/thumb200.jpg)
Vagrant spider
- Worldwide there are 37,500 different species known. By comparison, there are only 9,000 species of birds and 4,000 species of mammals.
- New Zealand has at least 2,500 species, but only 1,300 have a scientific name.