Sample from a Heron's Head Park salt marsh pond OS1 shows a Cyanobacterial Filament moving slowly past a strand of Algae. Magnification is 1000x Hoffman Modulation Contrast optics photographed with a Nikon Coolpix 885 at 3x zoom. Cyanobacteria are ancient photosynthetic prokaryote bacteria thought to have created our oxygen atmosphere over the last 3-billion years. The algae is a eukaryote multicellular primitive plant that probably arrived on the scene between 1-billion and 700-million years ago. Both Cyanobacteria and Algae continue to release oxygen into the atmosphere during photosynthesis. Be nice animals and say thanks to the blue-green and green "slime" that help make your next breath possible.

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