Heather Angel / Man using pole to propel bamboo raft on Lijang / Li River, Karst peaks beyond. At dawn, Lijiang River Scenic Zone, Yangshuo county, Guangxi, China.
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Michel Roggo / Freshwater spring in the intertidal zone of the Piccaninnie Ponds Conservation Park, South Australia, Australia. March 2015 . Photographed for The Freshwater Project
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Juergen Freund / Schooling silversides (Atheriniformes) split level with karst limestone cliff and West Papuan fishermen in their dugout outrigger canoe. Raja Ampat, Indonesia. Second Place in the Portfolio Award of t...
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Juan Carlos Munoz / European beech forest (Fagus sylvatica) in autumn, view from below in the mist, Ilirska Bistrica, Green Karst, Slovenia, October.
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Juan Carlos Munoz / People exploring underground lakes via rigid inflatable boat, Cross Cave (Krizna jama) under Cross Mountain, Green Karst, Slovenia, October 2014.
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Juan Carlos Munoz / Tourists looking down onto underground stream, from illuminated pathway, Skocjan Caves, Green Karst, Slovenia, October 2014.
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Angelo Gandolfi / Gruta do Lago Azul, karst cave and lake in Bonito, Mato Grosso do Sul, Brazil, August 2010.
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Graham Eaton / Limestone pavement above Malham Cove, Yorkshire
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Florian Möllers / Chinese Fisherman on his raft with Great Cormorant (Phalacrocorax carbo sinensis), against the karst hills at the Li River. Yangshuo, Guangxi, China, November.
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Florian Möllers / Chinese Fisherman on his raft with Great Cormorant (Phalacrocorax carbo sinensis), against the karst hills at the Li River. Yangshuo, Guangxi, China, November.
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Florian Möllers / Chinese fisherman on his raft with Great Cormorant (Phalacrocorax carbo sinensis), silhouetted against the karst hills at the Li River. Yangshuo, Guangxi, China, November.
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Juergen Freund / Schooling Silverside fish (Antherinidae) split level with karst limestone walls, West Papuan fisherman in boat, North Raja Ampat, West Papua, Indonesia, February 2002.
