Thermophiles are microorganisms that flourish in extremely hot temperatures(106° to 252° F)found around thermal hot springs or hydrothermal vents deep in the ocean. Visiting an active thermal area often, such as the dramatic Porcelain Basin in Yellowstone, the practiced eye will note both subtle and significant changes in thermophile mats. These changes are dependent upon water temperature, volume, and chemical ingredients. Constant fluctuations "paint" and "repaint" Porcelain Basin in shades of chartreuse, sunflower, emerald, and marmalade, like the paintbrush of some thermal Van Gogh.
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