Scanning electron photomicrograph; x4,500 approximate magnification; post-capture digital colorization

Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, United States

This shell detail of a single-celled marine animal called a radiolarian shows that the organism has eaten three smaller plant-like diatoms. The diatoms have been incorporated into the radiolarianŐs shell for additional strength.