dbe7ada11c587fd7b73e36fbdf631a11

The members of the colony are interconnected with a bundle of threads. Numerous delicate spines protruding from the valve\'s margin are visible. Scale bar indicates 50 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.