Scanning electron microscope (SEM) photograph of a diatom on a lodgepole pine needle from Upper Geyser Basin, Yellowstone National Park
linkScanning electron microscope (SEM) photograph of a diatom on a lodgepole pine needle from Upper Geyser Basin. A 10 micrometer (µm) scale is shown at the bottom of the image (slightly less than the width of human hair).