Andy Rouse / Great crested grebe (Podiceps cristatus cristatus) courtship weed dance, Cardiff, UK, March.
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Andy Rouse / Great crested grebe (Podiceps cristatus cristatus) courtship dance at dawn, Cardiff, UK, March.
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Nick Upton / Mute swan (Cygnus olor) female and a young cygnet foraging in sunset light, Kennet and Avon canal, Caen Hill, Wiltshire, UK, June.
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Philippe Clement / Young Edible frog (Rana esculenta) amongst Duckweed (Lemnaceae), La Brenne, France
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Claudio Contreras / Morelet's crocodile (Crocodylus moreletii), captive Catemaco Lake, Los Tuxtlas Biosphere Reserve, Mexico, July
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Claudio Contreras / Morelet's crocodile (Crocodylus moreletii) close up of eye under pond weed, captive Catemaco Lake, Los Tuxtlas Biosphere Reserve, Mexico, July
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Eric Medard / European goldfinch (Carduelis carduelis) drinking, France. September.
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Barry Mansell / American alligator (Alligator mississippiensis) in duck weed filled pond, Everglades National Park, South Florida, USA, August.
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Stephen Dalton / Common frog (Rana temporaria) in pondweed, Rookery Wood, Sussex, England, UK. July.
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Steve Downer / Tilt shot of an Emperor dragonfly (Anax imperator) nymph on pond weed, Warwickshire, England, UK, May.
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John Cancalosi / Green frog (Lithobates clamitans) in duckweed, New York, August.
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John Cancalosi / Pickerel frog (Rana palustris) amongst duckweed, Washington DC, USA, August.
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John Cancalosi / Green frog (Lithobates clamitans) amongst duckweed, Washington DC, USA, August.
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John Cancalosi / Green frog (Lithobates clamitans) amongst duckweed at surface, Washington DC, USA, September.
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John Cancalosi / Green frog (Lithobates clamitans) amongst duckweed at surface, Washington DC, USA, September.
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John Cancalosi / Green frog (Lithobates clamitans) amongst duckweed at surface, Washington DC, USA, September.
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John Cancalosi / Green frog (Lithobates clamitans) amongst duckweed at surface, Washington DC, USA, September.
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John Cancalosi / Green frog (Lithobates clamitans) amongst duckweed at surface, Washington DC, USA, August.
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John Cancalosi / Green frog (Lithobates clamitans) amongst duckweed at surface, Washington DC, USA, August.
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Russell Cooper / Common newt / Smooth newt (Triturus vulgaris) male in breeding colouration. South-west London, UK.
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Cyril Ruoso / Frog (Pelophylax sp) in pondweed with mouth wide open, Burgundy, France, May.
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Cyril Ruoso / Frog (Pelophylax sp) in pondweed with mouth wide open, Burgundy, France, May.
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Philippe Clement / Edible frog (Pelophylax esculentus) among duckweed in pond, La Brenne, France, June
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Dong Lei / Yunnan flying frog (Rhacophorus gongshanensis) swimming at night, Gaoligong Mountain National Nature Reserve, Tengchong county, Yunnan Province, China. May.
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David Tipling / Common frog (Rana temporaria) and spawn underwater in pond. West Runton, North Norfolk, England, UK, March.
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John Cancalosi / Leopard frog (Lithobates pipienss) in pond, New York, USA, August.
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John Cancalosi / Leopard frog (Lithobates pipiens) in pond, New York, USA, August.
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John Cancalosi / Leopard frog (Lithobates pipiens) in pondweed, New York, USA, August.
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John Cancalosi / Leopard frog (Lithobates pipiens) covered in pond weed, New York, USA, August.
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John Cancalosi / Leopard frog (Lithobates pipiens) covered in pond weed, New York, USA, August.
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B&S Draker / American Alligator (Alligator mississippiensis) adult camouflaged in duckweed (Lemnaceae). Sinton, Coastel Bend, Texas, USA.
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Paul Harcourt Davies / Common / Lesser duckweed (Lemna minor) on pond water, Italy
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Edwin Giesbers / RF- European edible frog (Rana esculenta) amongst duckweed, the Netherlands.
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Wild Wonders of Europe / della Ferrera / Common duckweed (Lemna minor) covering a water channel at dusk, riparian forest mainly consisting of Willow trees (Salix sp) Lonjsko Polje Nature Park, Sisack-Moslavina county, Slavonia region, Posavi...
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Philippe Clement / Edible frog {Rana esculenta} sitting amongst Duckweed (Lemnaceae), La Brenne, France
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Philippe Clement / Edible frog {Rana esculenta} sitting amongst Duckweed (Lemnaceae), La Brenne, France
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Willem Kolvoort / Underside view of Lesser duckweed (Lemna minor) in a nutrient rich ditch near Lake Naarden, Holland
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Rolf Nussbaumer / RF- Rio Grande leopard frog (Rana berlandieri) pair in duckweed. Texas, USA. (This image may be licensed either as rights managed or royalty free.)
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Jim Brandenburg / White-tailed Deer (Odocoileus virginianus) male in forest pond feeding on duckweed, Wisconsin
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George McCarthy / RF- Grass snake (Natrix natrix), UK. (This image may be licensed either as rights managed or royalty free.)
Heidi & Hans-Juergen Koch / American Alligator (Alligator mississippiensis) resting motionless in duckweed swamp, Florida
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Emanuele Biggi / Italian tree frog (Hyla intermedia) male calling amongst vegetation at pond edge, Rome, Italy.
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Ashley Cooper / Common frog (Rana temporaria) in a garden pond covered in Duckweed (Lemna minor), Ambleside, Lake District, Cumbria, UK. February.
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Ashley Cooper / Common frog (Rana temporaria) in a garden pond surrounded by Duckweed (Lemna minor), Ambleside, Lake District, Cumbria, UK. February.
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John Cancalosi / Northern watersnake (Nerodia sipedon) resting on reeds above duckweed covered pond. Maryland, USA. April.
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SCOTLAND: The Big Picture / Pair of Great crested grebe (Podiceps cristatus) performing 'weed dance' courtship display, Scotland, UK. April.
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Michael W. Richards / Mallard (Anas platyrhynchos) ducklings preening and feeding on duckweed in pond, Somerset, UK, July.
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Alex Hyde / Broad-leaved pondweed (Potamogeton natans) growing in moorland pool, with raindrops beading on the hydrophobic surface of the leaves. Peak District National Park, Derbyshire, UK. December.