Rolf Nussbaumer / Water hyacinth covering lake {Eichhornia crassipes} Texas, USA.
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Heather Angel / Channelled apple snail (Pomacea canaliculata) laid on Water hyacinth (Eichhornia crassipes) leaves, both invasive species, native to South America. Yangshuo, Guangxi Zhuang Autonomous Region, China.
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Staffan Widstrand / Wild Wonders of China / Water hyacinth (Eichhornia crassipes) and bees at Tongbiguan Nature Reserve, Dehong prefecture, Yunnan province, China. May
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Tom Gilks / Clumps of highly invasive Water hyacinth (Eichhornia Crassipes) floating on Lake Victoria, Kenya, April 2013.
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Tom Gilks / Woman carrying plastic washing bowl on head and wading through invasive Water hyacinth (Eichhornia crassipes) at lake edge, Kisumu region, Lake Victoria, Kenya
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Tom Gilks / Woman carrying plastic washing bowl on head and wading through invasive Water hyacinth (Eichhornia crassipes) at lake edge, Kisumu region, Lake Victoria, Kenya
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Tom Gilks / Women carrying plastic washing bowl on head wade through invasive Water hyacinth (Eichhornia crassipes) to reach lake edge, Kisumu region, Lake Victoria, Kenya
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Tom Gilks / Women with washing bowls wading out to reach lake edge beyond invasive Water hyacinth (Eichhornia crassipes) Kisumu region, Lake Victoria, Kenya, December 2013.
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Tom Gilks / Women with washing bowls wading out to reach lake edge beyond invasive Water hyacinth (Eichhornia crassipes) Kisumu region, Lake Victoria, Kenya, December 2013.
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Tom Gilks / Women with washing bowls wading out to reach lake edge beyond invasive Water hyacinth (Eichhornia crassipes) Kisumu region, Lake Victoria, Kenya, December 2013.
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Tom Gilks / Women with plastic tubs for washing clothes wading out to reach lake edge beyond invasive Water hyacinth (Eichhornia crassipes) Kisumu region, Lake Victoria, Kenya, December 2013.
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Adrian Davies / Water hyacinth (Eichhornia crassipes) Sabah, Borneo. Invasive species.
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Chris Mattison / Water hyacinth (Eichhornia crassipes) cultivated, occurs in South America.
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Anup Shah / Hippopotamus (Hippopotamus amphibius) in Common Water Hyacinth (Eichhornia crassipes), Masai Mara, Kenya
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Anup Shah / Hippopotamus (Hippopotamus amphibius) in Common Water Hyacinth (Eichhornia crassipes), Masai Mara, Kenya
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Anup Shah / Hippopotamus (Hippopotamus amphibius) with Common Water Hyacinth (Eichhornia crassipes), Masai Mara, Kenya
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Luiz Claudio Marigo / Common Water Hyacinth (Eichhornia crassipes) Pixaim River, Pantanal of Mato Grosso, Mato Grosso State, Western Brazil.
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Hiroya Minakuchi / Common Water Hyacinth (Eichhornia crassipes) in river, Costa Rica
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Nick Garbutt / Male Jaguar (Panthera onca palustris) emerging from bed of Water Hyacinths (Eichhornia sp.) at the edge of a tributary of Cuiaba River, Northern Pantanal, Brazil. September
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Fabio Liverani / Red Wattled Lapwing (Vanellus indicus) standing near flowering Water Hyacinths (Eichhornia crassipes) Willawilla lake, Sri Lanka.
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Fabio Liverani / Water Hyacinth (Eichhornia crassipes) in flower, Willawilla lake, Sri Lanka
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Michael Hutchinson / Water Hyacinth (Eichhornia crassipes) floating on lake in marsh, Esteros del Ibera, Argentina
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Michael Hutchinson / Water Hyacinth (Eichhornia crassipes) in flower in marsh, Esteros del Ibera, Argentina
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Kevin Schafer / Giant River Otter (Pteronura brasiliensis) peeking out of water amid Common Water Hyacinth (Eichhornia crassipes) plants, Pantanal, Brazil
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Albert Lleal / Common Water Hyacinth (Eichhornia crassipes) covering much of the surface of a vernal pond, Venezuela
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Nature Production / Water Hyacinth {Eichhornia crassipes} Japan
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Pete Oxford / Water hyacinth (Eichhornia crassipes) on water surface, Ecuador
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Bernard Castelein / Local people removing Water hyacinth (Eichhornia crassipes) in Keoladeo Ghana NP, Bharatpur, Rajasthan, India. This invasive aquatic introduced plant chokes the wetlands if not controlled, the remova...
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Bernard Castelein / Man removing Water hyacinth {Eichhornia crassipes} as ongoing wetland land management, Keoladeo Ghana NP, Bharatpur, Rajasthan, India
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Luiz Claudio Marigo / Water hyacinth {Eichhornia crassipes} Lake Jaraua, Amazonas, Brazil
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Yva Momatiuk & John Eastcott / Little Blue Heron (Egretta caerulea) perched on Common Water Hyacinth (Eichhornia crassipes) in marsh, Louisiana
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Pete Oxford / Common Water Hyacinth (Eichhornia crassipes) blooming, capable of doubling in size every 7 to 12 days, 982,000 hectare Yasuni National Park, the largest in Ecuador
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Konrad Wothe / Common Water Hyacinth (Eichhornia crassipes) in Paraguay River, Pantanal, Brazil
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Sebastian Kennerknecht / Common Water Hyacinth (Eichhornia crassipes), an invasive species, flowering, Diyasaru Park, Colombo, Sri Lanka
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Sebastian Kennerknecht / Common Water Hyacinth (Eichhornia crassipes), an invasive species, Diyasaru Park, Colombo, Sri Lanka
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Hiroya Minakuchi / Common Water Hyacinth (Eichhornia crassipes) flowering, Kinabatangan River, Malaysia
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Tony Heald / Hippopotamus (Hippopotamus Amphibius) with back covered in water hyacinth on back after leaving water. Mana Pools National Park Zimbabwe.