Yellowstone National Park Wyoming, USA
Thermophile /ther·mo·phile/ (ther´mo-fīl) an organism that grows best at elevated temperatures.
A wide variety of thermotolerant and thermophilic microscopic organisms thrive in Yellowstone’s geothermal features. Thermophilic bacteria and archaea are often brightly colored by photosynthetic pigments (chlorophylls or carotenoids).
Photo taken with Nikon D80 DSLR & 18-135mm Nikkor lens