Every year the Nikon Small World competition draws thousands of extreme close-up photos from scientists and photomicrographers around the world. These amazing images, made with the help of microscopes, let us see things we can otherwise only imagine, in detail that we couldn't otherwise access.
We've got a sampling of the contenders in this gallery, and you can view the more than 100 finalists and choose your favorites by Oct. 31. Check back here for some more featured selections in the coming weeks and the judge's picks on Oct. 4.
Above:
Photomicrographer: Marta Guervos, University of Oviedo, Asturias, Spain
Specimen: Acacia dealbata (Silver wattle tree) anther
Technique: Confocal, autofluorescence
Image: Courtesy of Nikon Small World
Betsy Mason is the editor of Wired Science. Follow @betsymason on Twitter.