The Nikon Small World Photomicrography Competition is in its 45th year now, zooming in on some of the tiniest living (and non-living) objects of our world. From a tiny alligator getting his nervous system to the smallest snowflake, more than 2000 photos were submitted from 100 countries. Here are 16 images that made it to the finals, including the winners themselves. Feast your eyes on some of the best macro-photography in all the land.