Jeff Vanuga / Sinter formations in a thermal pool, Shoshone Geyser Basin, Yellowstone National Park, Wyoming, USA, August 2015.
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Juergen Freund / Bitter springs thermal pool, Elsey National Park, Northern Territory, Australia.
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Ammonite / Baird's tapir (Tapirus bairdii) wallowing in a pool of water, footage taken at night using thermal camera technology, Santa Rosa National Park, Costa Rica.
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Anup Shah / Japanese Macaque (Macaca fuscata) male yawning while resting at the edge of thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.
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Anup Shah / Japanese Macaque (Macaca fuscata) male resting at the edge of thermal hotspring pool with hand covering face, Jigokudani Yean-Koen National Park, Japan, February.
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Anup Shah / Japanese Macaque (Macaca fuscata) female emerging wet from thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.
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Anup Shah / Japanese Macaques (Macaca fuscata) fighting in thermal hotspring pool. Jigokudani Yaen-Koen National Park, Japan, February.
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Anup Shah / Japanese Macaque (Macaca fuscata) female and baby submerged in thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.
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Anup Shah / Japanese Macaque (Macaca fuscata) male submerged in thermal hotspring pool. Jigokudani Yaen-Koen National Park, Japan, February.
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Anup Shah / Japanese Macaque (Macaca fuscata) baby sitting on the edge of thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.
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Anup Shah / Japanese Macaque (Macaca fuscata) baby sitting on the edge of thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.
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Anup Shah / Japanese Macaque (Macaca fuscata) baby sitting on the edge of thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.