Tony Heald / RF- Hippopotamus (Hippopotamus amphibius) surrounded by water lettuce. Kruger National Park, South Africa. (This image may be licensed either as rights managed or royalty free.)
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Tony Heald / Hippopotamus (Hippopotamus amphibius) in pond, surrounded by Water lettuce (Pistia stratiotes). Mana Pools National Park, Zimbabwe.
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Jen Guyton / Bushpig (Potamochoerus larvatus) foraging for water lettuce (Pistia sp.) in a seasonal pond, Gorongosa National Park, Mozambique.
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Enrique Lopez-Tapia / Marabou stork (Leptoptilos crumeniferus) legs, next to Water lettuce (Pistia) Lake Ziway, Rift Valley. Ethiopia
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Denis-Huot / RF- Hippopotamuses (Hippopotamus amphibius) in water lettuces, Masai Mara Game Reserve, Kenya. (This image may be licensed either as rights managed or royalty free.)
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Denis-Huot / African jacana (Actophilornis africanus) walking on Water Lettuce (Pistia stratiotes) Masai-Mara Game Reserve, Kenya
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Denis-Huot / African jacana (Actophilornis africanus) walking on Water Lettuce (Pistia stratiotes) Masai-Mara Game Reserve, Kenya
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Denis-Huot / African jacana (Actophilornis africanus) walking on Water Lettuce (Pistia stratiotes) Masai-Mara Game Reserve, Kenya
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Denis-Huot / African jacana (Actophilornis africanus) walking on Water Lettuce (Pistia stratiotes) Masai-Mara Game Reserve, Kenya
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Denis-Huot / Hippopotamus (Hippopotamus amphibius) male yawning in Water lettuces (Pistia stratiotes) Masai-Mara Game Reserve, Kenya
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Denis-Huot / Hippopotamus (Hippopotamus amphibius) male yawning in Water lettuces (Pistia stratiotes) Masai-Mara Game Reserve, Kenya
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Denis-Huot / Young hippo (Hippopotamus amphibius) amongst water lettuces (Pistia stratiotes) Masai-Mara Game Reserve, Kenya. Vulnerable species.
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Denis-Huot / Hippo (Hippopotamus amphibius) male grazing with water lettuces (Pistia stratiotes) on its back, in the rain, Masai-Mara Game Reserve, Kenya. Vulnerable species.
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Denis-Huot / Hippo (Hippopotamus amphibius) male in water amongst (Pistia stratiotes) Masai-Mara Game Reserve, Kenya. Vulnerable species.
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Denis-Huot / Hippo (Hippopotamus amphibius) male yawning amongst water lettuces (Pistia stratiotes) Masai-Mara Game Reserve, Kenya. Vulnerable species.
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Denis-Huot / Hippo (Hippopotamus amphibius) male eating at daytime covered with water lettuces (Pistia stratiotes), Masai-Mara Game Reserve, Kenya. Vulnerable species.
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Winfried Wisniewski / Hippopotamus (Hippopotamus amphibius) in water lettuce, Masai Mara, Kenya
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Pete Oxford / Brown Caiman (Caiman crocodilus fuscus) with water lettuce (Pistia stratiotes) on its back. Hato Masaguarel working farm and biological station, Guarico Province, Venezuela, March.
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Pete Oxford / Brown Caiman (Caiman crocodilus fuscus) - subspecies of Caiman crocodilus - in front of water covered with Water Lettuce (Pistia stratiotes). Guarico Province, Venezuela.
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Pete Oxford / Spectacled Caiman (Caiman crocodilus), Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Spectacled Caiman (Caiman crocodilus), Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Savanna Side-necked Turtle (Podocnemis vogli) pair basking, Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Savanna Side-necked Turtle (Podocnemis vogli) basking, Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Savanna Side-necked Turtle (Podocnemis vogli) pair basking, Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Savanna Side-necked Turtle (Podocnemis vogli) head looking above water surface, Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Spectacled Caiman (Caiman crocodilus) in Water Lettuce (Pistia stratiotes), Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Spectacled Caiman (Caiman crocodilus) in Water Lettuce (Pistia stratiotes), Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Spectacled Caiman (Caiman crocodilus), Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Spectacled Caiman (Caiman crocodilus) feeding on Capybara (Hydrochoerus hydrochaeris), Hato Masaguaral working farm and biological station, Venezuela
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Pete Oxford / Savanna Side-necked Turtle (Podocnemis vogli) sunbathing, Hato Masaguaral working farm and biological station, Venezuela
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Rolf Nussbaumer / American Alligator (Alligator mississippiensis) with head partially submerged, amongst Water Lettuce (Pistia stratiotes) Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA
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Martin Gabriel / Water cabbage / lettuce (Pistia stratiotes) floating on a river near Sierpe, Southern Costa Rica, February 2009
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Martin Gabriel / Water cabbage / lettuce (Pistia stratiotes) floating on a river near Sierpe, Southern Costa Rica
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Luciano Candisani / Water Lettuce (Pistia stratiotes) in Tapajos River, Amazon, Brazil
