Wim van den Heever / African elephant (Loxodonta africana) grazing in an open field with a full moon rising near Baobab tree (Adansonia digitata). With tourists on safari under the tree. Savuti Marsh, Botswana, May 2014.
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Jeff Vanuga / Traffic jam caused by Grizzly bear (Ursus arctos horribilis) mother and cubs crossing road, watched by tourists and photographers, Yellowstone National Park, Wyoming, USA, October 2015.
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Inaki Relanzon / Tourists watching and petting African elephant (Loxodonta africana) calf. David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.
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Juan Carlos Munoz / Tourist paddling among mangroves in canoe, Puerto Jimenez, Golfo Dulce, Osa Peninsula, Costa Rica.
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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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Juan Carlos Munoz / Tourists hiking along dirt track, Triglav National Park, Julian Alps, Slovenia, October 2010.
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Andy Rouse / Bengal tiger (Panthera tigris tigris) with tourists watching from cars, Ranthambore, India
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Enrique Lopez-Tapia / Tourists riding on domestic Indian elephant (Elephas maximus) crossing Narayani River in the dawn mist during wildlife safari, Royal Chitwan National Park, Nepal.
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Enrique Lopez-Tapia / Tourists riding domesticated Indian Elephant (Elephas maximas) on safari, Royal Chitwan National Park, Nepal. October 2011.
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Christophe Courteau / Tourists and guide using snowshoes on an ecotourism trekking holiday, Svalbard, Norway, June, 2012. Model released.
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Enrique Lopez-Tapia / Tourists on a zodiac going past icebergs in Iceberg Alley, Pleneau Island, Antarctica
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Nick Garbutt,Nick Garbutt / Tourist watching masses of butterflies drinking from temporary pools. Various species including Large Orange Sulphur (Phoebis agarithe), Cloudless Sulphur (Phoebis sennae), White-angled Sulphur (Anteo...