50.0 MB (3.6 MB compressed)
4385 x 3987 pixels
37.1 x 33.8 cm ⏐ 14.6 x 13.3 in (300dpi)
BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Scanning electron micrograph (SEM) of a Triceratium favus diatom. Diatoms are single-celled photosynthetic algae, of which there are about 100,000 species. They have mineralized cell walls (frustules) that contain silica and provide protection and support. The diatoms form an important part of the plankton at the base of the marine and freshwater food chains. Magnification: x850.
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