With the naked eye structures in the plant kingdom and the animal kingdom leave no real impression on us. But what universe lies in dimensions below 100 micrometers? With optical microscopes we are able to see structures down to some hundred nanometers, but without much field of depth. Scanning electron microscopy brings more than a thousand-fold field of depth, with some physical effects to enhance small parts of the specimen.

This image shows the proboscis of a Greta oto butterfly.