London, United Kingdom
Diatom Shell, Sem
Photograph - Photograph
Diatom shell. Coloured scanning electron micrograph (SEM) of the shell of a Biddulphia sturtii diatom. The diatoms are a group of photosynthetic, single-celled algae containing about 10,000 species. They form an important part of the plankton at the base of the marine and freshwater food chains. The characteristic feature of diatoms is their intricately patterned, glass-like cell wall, or frustule. The frustule often has rows of tiny holes, known as striae. Magnification x8000 when printed at 10 centimetres wide.
May 2nd, 2013
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