Are you used to have seen one of these creatures? Yes, if you are a lover of Microbiology, and “swallow” everything that has to do with this topic. Otherwise, they are all around us, but you can not see them because they are too small. Hidden, tucked, this small but very complex beings live their lives. Their external structure reminiscent of the animals much larger than them. The diversity of microorganisms is really amazing and interesting, and these photographs enable us to learn more about the world around us, which is incredible.