Yes, most do. And here's what these can look like.
The Sixth Prize winner of the 2008 BioScapes contest, entitled "Snail Bite", this 30X image by Briton David Walker, snail "teeth," or cuticula, are silhouetted against the animal's "jaw" or radula. "Nature often hides beautiful things in what seem the least likely places," Walker said in a statement. (Picture by David Walker, courtesy 2008 Olympus BioScapes Digital Imaging Competition)
The competition recognizes extraordinary microscope photos of plants, animals, and other life-forms and is sponsored by Olympus America, Inc. More micro photos on the National Geographic website.