1. Copepod (right) and Vibrio cholerae (left), also known as cholera: dormant spores of a bacterium. When conditions are unfavorable for V. cholerae, it shrinks into a spore and remains mobile by attaching to a copepod or colonizing its gut. This explains its apparent disappearance and reappearance in the environment.
2. Eye of a honeybee ( Apis mellifera ) covered in dandelion pollen at 120x magnification. This was the overall winner of the Nikon Small World Microscopic Photography Competition.
3. The blue haze of Pluto's atmosphere taken by the New Horizons space probe.
4. Tissue paper.
5. Eyelashes