Technically a microorganism or microbe is an organism that is microscopic. The study of microorganisms is called microbiology. Microorganisms can be bacteria, fungi, archaea or protists. The term microorganisms does not include viruses and prions, which are generally classified as non-living.
If you wont to know more about the smoll living animal you should first serch about it in google to get. More information than you shold read abook about these animal than you make your project