Every year, Nikon selects the most artful, scientifically enlightening and skillfully produced images from thousands of submissions for its Small World microscope photography contest. Tomorrow, another set of impressive winners will be announced for the contest’s 40th year.

In this gallery you can enjoy the winners from each year of the competition (unfortunately, the first two years aren’t available online). If you still want more awesome photomicrography, browse the entire slate of winners from every year, or check out some of our galleries of photos and videos from previous years.