A portion of microbial mat from Waikite, near Rotorua, growing at a temperature of about 60°C. The top of the mat is composed of a white layer of extracellular polysaccharides. Below this is are orange bacteria, and further below are layers of green cyanobacteria.
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GNS Science, Extremophile photo collection
Photograph by Duncan Graham
Permission of GNS Science must be obtained before any use of this image.