Melosira moniliformis together with Rhabdonema arcuatum. Sample from North Sea near Heligoland (spring diatom ).
The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Leica dissecting microscope with MFT camera Olympus OM-D E-M5 II.
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Wolfgang Bettighofer, www.protisten.de.