50.0 MB (2.7 MB compressed)
4221 x 4140 pixels
35.8 x 35.1 cm ⏐ 14.1 x 13.8 in (300dpi)
BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Fossil diatom, Paralia Sol. 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 x2000.
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