Image shows chloroplasts, small sparkling droplets of storage polysaccharide chrysolaminarin used as carbohydrate food reserve, and the fine connection tubes between the cells. The image was built up using several photomicrographic frames with manual stacking technique. Scale bar indicates 50 µm.
Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.