|One of the C. elegans roundworms.|
|The movement of C. elegans|
C. elegans has become one of the model organism in the biology world, making its way into virtually every basic biology text. At this point, the vast knowledge base of these tiny worms is amazing. Also, for a humble worm, they are incredibly important to what is now understood about the living world. We owe a lot to them.
Sources are Animal Diversity Web and Worm Classroom. Images are from Wikimedia Commons under Creative Commons licenses: one, two.