Micromacro Micro-organisms

MO2004: Photomicrograph of valve view of the centric diatom Actinoptychus senarius Ehrenberg 1843. Diatoms are extremely abundant in freshwater and marine ecosystems, it is estimated that 20% to 25% of all organic carbon fixation on the planet is carried out by diatoms.Diameter approximately 100 micrometres,imaged using differential interference contrast.