Squid Suckers, winner of Honorable Mention in the 2008 International Science and Engineering Visualization Awards. Loligo pealei squids have eight arms and two tentacles, all of which are coated with suction-cups, lined with fangs composed of chitin. These tiny suckers, whose diameters are around 400 microns, ultimately allow the half-meter-long squid to get a solid grip on its environment. (Courtesy of Jessica D. Schiffman and Caroline L. Schauer; Drexel University)
Link for more fascinating imagery.