Thalassiosira punctigera accompanied by Thalassiosira angulata. The specimens were gathered in the Kieler Förde (Baltic Sea). indicates 25 µm.
The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with MFT camera Olympus OM-D E-M5 II.
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Wolfgang Bettighofer, www.protisten.de.