DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
False-colour scanning electron micrograph (SEM) of grains of sand from a beach on the Atlantic coast of Barbados. Some of the grains are recognisable as of organic origin. Magnification: X 12 at 35mm size, X 86 at 8x10-inch size.
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