London, United Kingdom
Diatom Alga, Sem
Photograph - Photograph
Diatom alga. Coloured scanning electron micrograph (SEM) of a Bacteriastrum delicatulum diatom. This is a planktonic marine unicellular alga. It has a mineralised cell wall (frustule) divided into two halves. The frustule contains silica and provides protection and support. The long arms may be an aid to floatation. Magnification x30 at 6x7cm size.
May 8th, 2013
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