Some specimen of this centric diatom carried naviculoid ones on the valve(s). Scale bar indicates 25 µm. The image was built up using several photomicrographic frames with manual stacking technique.
Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
This image was taken by Wolfgang Bettighofer. Image copyright by Wolfgang Bettighofer (www.protisten.de); image used under license to MBL.
