I finally got the chance to interview (via email) local nature writer/illustrator Carol Coogan. Read "How to Get Your Kids Out Drawing Nature" on GeekDad.
And The Micropolitan Museum of Microscopic Art Forms is a website featuring images of teeny tiny organisms. Here's their description:
For several centuries artists have depicted the human figure, still-lives, landscapes or non-figurative motifs. One subject has been widely neglected all those years: Micro-organisms!
The Micropolitan Museum finally exhibits these often overlooked works of art which are only visible with the aid of the microscope. Curator Wim van Egmond has collected the finest microscopic masterpieces nature has ever produced during eons of natural selection.