Cyril Ruoso / Sumatran orangutan (Pongo abelii) female holding hands with baby whilst hanging from liana. Gunung Leuser National Park, Sumatra, Indonesia.

Anup Shah / Sumatran orangutan (Pongo abelii) female 'Juni' aged 12 years swinging from a liana. Gunung Leuser National Park, Sumatra, Indonesia. Rehabilitated and released (or descended from those which were rel...

Luiz Claudio Marigo / Lianas / vines of the flooded rainforest, Varzea, Mamiraua Ecol Stn, Amazonas, Brazil

Michael & Patricia Fogden / Lianas in interior of lowland rainforest, La Selva Biological Research Station, Costa Rica

Mark Moffett / Lianas climbing tree, Costa Rica

Doug Wechsler / Rainforest understorey, lianas. Iwokrama, Guyana, S. America

Doug Wechsler / Lianas in tropical rainforest, Borneo, Indonesia.

Staffan Widstrand / Tropical rainforest lianas (climbing vines) Trinidad, Caribbean.

Tim Laman / Small liana / vine in Sumatran rainforest, Batang Toru Forest, Sumatran Orangutan Conservation Project, North Sumatran Province, Indonesia.

Heather Angel / Shrubs, trees and lianas in tropical rainforest. Xishuangbanna,Yunnan Province, China.

Staffan Widstrand / Wild Wonders of China / Tangle of roots and lianas, Tangjiahe National Nature Reserve, Qingchuan County, Sichuan province, China

Staffan Widstrand / Wild Wonders of China / Lianas sp. growing around a tree , Tangjiahe National Nature Reserve,Qingchuan County, Sichuan province, China

Staffan Widstrand / Spiral vine / liana, Lowland rainforest, near Kap Araide, Kumawa Peninsula, Western Papua, Indonesian New Guinea

Jiri Lochman / Giant lianas hanging from rainforest tree, Subtropical rainforest, Border Ranges National Park, Gondwana Rainforest UNESCO Natural World Heritage Site, New South Wales, Australia.

Jiri Lochman / Giant lianas hanging from rainforest tree, Subtropical rainforest, Border Ranges National Park, Gondwana Rainforest UNESCO Natural World Heritage Site, New South Wales, Australia.

Enrique Lopez-Tapia / Sumatran Orangutan (Pongo abelii) female carrying infant as she climbs between trees and lianas, Gunung Leuser National Park, Indonesia, UNSECO World Heritage site, November.

Enrique Lopez-Tapia / Sumatran orangutan (Pongo abelii) female moving between lianas, Gunung Leuser National Park, UNESCO World Heritage site, November.

Jen Guyton / Speckled blunthead tree snake (Imantodes inornatus) among vines and lianas in the rainforest at La Selva Biological Station, Costa Rica.

Tim Laman / Bornean orangutan (Pongo pygmaeus) using lianas to climb through the rain forest canopy. Gunung Palung National Park, Borneo

Tim Laman / View from the top of the canopy down into lowland rainforest with lianas (Bauhinia sp.). West Papua, New Guinea, August.

Tim Laman / Rain forest tree covered in lianas, mostly Bauhinia sp. This tree is the territory of a male King Bird of Paradise, who has his display site here. West Papua, New Guinea.

Tim Laman / Rain forest tree covered in lianas, mostly Bauhinia sp. This tree is the territory of a male King Bird of Paradise, who has his display site here. West Papua, New Guinea..

Tim Laman / Rain forest tree covered in lianas, mostly Bauhinia sp. This tree is the territory of a male King Bird of Paradise, who has his display site here. West Papua, New Guinea.

Eric Baccega / Mountain gorilla(Gorilla beringei beringei) juvenile swinging on liana and smiling in forest. Virunga National Park, Democratic Republic of Congo, Africa

Cyril Ruoso / Winged Liana seed known as a 'samara', in tropical forest, Bateke Plateau, Gabon.

Cyril Ruoso / Tropical rainforest with lianas, Barro Colorado island, Gatun lake, Panama Canal, Panama.

Cyril Ruoso / Tropical rainforest with Lianas, Barro Colorado island, Gatun lake, Panama Canal, Panama.

Cyril Ruoso / Tropical rainforest with Lianas, Barro Colorado island, Gatun lake, Panama Canal, Panama.

Adrian Davies / Liana (Tetrastigma sp) on which Rafflesia grows parasitically, Sabah, Borneo.

Cyril Ruoso / Thick liana growing around the trunk of a rainforest tree, Way Kambas National Park, Sumatra, Indonesia.

Cyril Ruoso / Thick liana growing around the trunk of a rainforest tree, Way Kambas National Park, Sumatra, Indonesia.

Cyril Ruoso / Tropical rainforest understory, Bukit Barisan National Park, Sumatra, Indonesia.

Konrad Wothe / Lianas and buttress roots in lowland rainforest, Panguana Nature Reserve, Peru

Konrad Wothe / Lianas in lowland rainforest, Panguana Nature Reserve, Peru

Pedro Narra / Bornean Orangutan (Pongo pygmaeus) scratching its head whilst hanging from a liana, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia.

Simon Colmer / Liana in semi-deciduous tropical rain forest, Budongo Forest Reserve, Uganda.

Simon Colmer / Liana in semi-deciduous tropical rain forest, Budongo Forest Reserve, Uganda.

Anup Shah / Sumatran orangutan (Pongo abelii) female 'Sandra' aged 22 years carrying baby daughter 'Sandri' aged 1-2 years standing on a log supported by lianas. Gunung Leuser National Park, Sumatra, Indonesia. R...

Anup Shah / Sumatran orangutan (Pongo abelii) mature male 'Halik' aged 26 years sitting in trees supported by lianas. Gunung Leuser National Park, Sumatra, Indonesia. Rehabilitated and released (or descended from...

Anup Shah / Sumatran orangutan (Pongo abelii) female 'Juni' aged 12 years climbing lianas. Gunung Leuser National Park, Sumatra, Indonesia. Rehabilitated and released (or descended from those which were released)...

Roland Seitre / Forest with lianas, Lifou, Loyalty Islands Province, New Caledonia

Roland Seitre / Forest with lianas, Lifou, Loyalty Islands Province, New Caledonia

Roland Seitre / Cliff face with lianas in forest, Lifou, Loyalty Islands Province, New Caledonia

Roland Seitre / Lianas in forest, Lifou, Loyalty Islands Province, New Caledonia

Anup Shah / Sumatran Orangutan (Pongo abelii) thirty-six year old female, named Suma, hanging from lianas, Gunung Leuser National Park, Sumatra, Indonesia

Anup Shah / Sumatran Orangutan (Pongo abelii) twenty-two year old female, named Sandra, hanging from lianas with her female baby, named Sandri, Gunung Leuser National Park, Sumatra, Indonesia

Tim Laman / Lowland rainforest interior view with lianas (Bauhinia sp. ) around the base of a large tree. West Papua, New Guinea

Tim Laman / Lowland rainforest interior view with lianas (Bauhinia sp. ) around the base of a large tree. West Papua, New Guinea

Cyril Ruoso / Lianas in tropical rainforest, Barro Colorado Island, Panama

Cyril Ruoso / Sumatran Orangutan (Pongo abelii) female hanging on lianas, Gunung Leuser National Park, Sumatra, Indonesia

Cyril Ruoso / Sumatran Orangutan (Pongo abelii) mother and young hanging on lianas, Gunung Leuser National Park, Sumatra, Indonesia

Cyril Ruoso / Sumatran Orangutan (Pongo abelii) mother and young hanging on lianas, Gunung Leuser National Park, Sumatra, Indonesia

Cyril Ruoso / Sumatran Orangutan (Pongo abelii) mother and young hanging on lianas, Gunung Leuser National Park, Sumatra, Indonesia

Cyril Ruoso / Sumatran Orangutan (Pongo abelii) mother and young hanging on lianas, Gunung Leuser National Park, Sumatra, Indonesia

Cyril Ruoso / Drill (Mandrillus leucophaeus) young female sitting amid lianas, Pandrillus Drill Sanctuary, Nigeria

Staffan Widstrand / Wild Wonders of China / Lianas in the subtropical rainforest, Gaoligongshan NP, Yunnan province, China

Suzi Eszterhas / Chimpanzee (Pan troglodytes) large male coming down from tree holding liana, tropical forest, Western Uganda

Suzi Eszterhas / Chimpanzee (Pan troglodytes) mother and baby age two and a half, tropical forest, Western Uganda

Jabruson / Liana junction over termite mound in rainforest interior, Bai Hokou, Dzanga-Ndoki National Park, Central African Republic

Jabruson / Liana junction over termite mound in rainforest interior, Bai Hokou, Dzanga-Ndoki National Park, Central African Republic

Jabruson / Agile Mangabey (Cercocebus agilis) juvenile, surrounded by forest liana . Image showing forested environment / habitat. Bai Hokou, Dzanga-Ndoki National Park, Central African Republic

Jabruson / Agile Mangabey (Cercocebus agilis) juvenile surrounded by forest liana. Image showing forested environment / habitat. Bai Hokou, Dzanga-Ndoki National Park, Central African Republic

Jabruson / Agile Mangabey (Cercocebus agilis) juvenile surrounded by forest liana. Image showing forested environment / habitat. Bai Hokou, Dzanga-Ndoki National Park, Central African Republic

Jabruson / Agile Mangabey (Cercocebus agilis) juvenile, surrounded by forest liana. Image showing forested environment / habitat. Bai Hokou, Dzanga-Ndoki National Park, Central African Republic

Christophe Courteau / Mountain gorilla (Gorilla beringei) silverback pulling on lianas in order to eat the leaves, Susa Group, Volcanoes National Park, Rwanda, wet season April

Christophe Courteau / Mountain gorilla (Gorilla beringei) silverback pulling on lianas in order to eat the leaves, Susa Group, Volcanoes National Park, Rwanda, wet season April

Piotr Naskrecki / Lianas hanging from rocks in rainforest, Sipaliwini, Surinam

Christian Ziegler / Lianas in rainforest, Barro Colorado Island, Panama

Piotr Naskrecki / Lianas twisting through rainforest, Ghana

Alan Watson / Lianas on palisander trees (Dalbergia louvelii) Andasibe-Mantadia National Park, Madagascar - Currently 'Endangered species' IUCN Red list January 2009

Murray Cooper / Palms and lianas in forest interior, Amazon, Ecuador

Alan Watson / Chewstick plant or 'Bejuco de Indio lianas' (Gouania lupuloides) and jobo de puerco tree (Spondias purpurea) in lowland tropical rainforest over limestone, Los Haitises National Park, Dominican Republ...

Alan Watson / Samo lianas / 'Sea heart' / Monkey ladder vines (Entada gigas) in dense lowland tropical rainforest at 400 metres, Loma Quita Espuela Scientific Reserve, Dominican Republic.

Alan Watson / Samo lianas / 'Sea heart' / Monkey ladder vines (Entada gigas) in lowland tropical rainforest at 400 metres, Loma Quita Espuela Scientific Reserve, Dominican Republic.

Konrad Wothe / Buttress roots and lianas in the rainforest at Tambopata River, Peru

Bernard Castelein / Hoolock / White browed gibbon (Hylobates hoolock) male stretching, clinging to lianas in forest, Gibbon Wildlife Sanctuary, Assam, India, Endangered species

Bernard Castelein / Hoolock / White browed gibbon (Hylobates hoolock) male stretching, clinging to lianas in forest, Gibbon Wildlife Sanctuary, Assam, India, Endangered species

Tim Laman / Rainforest interior with ferns, moss covered branches, lianas and mist, inside the Caldera on Bioko Island, Equatorial Guinea, International League of Conservation Photographers, January 2008.

Tim Laman / A tangle of lianas (woody vines) in the rainforest of Bioko Island, Equatorial Guinea, January 2008

Piotr Naskrecki / Looking up into rainforest canopy through lianas, Brownsberg Reserve, Surinam

Piotr Naskrecki / Lianas, ferns and moss covering tree trunk, Braulio Carrillo National Park, Costa Rica

Thomas Marent / Orangutan (Pongo pygmaeus) juvenile hanging on lianas, Camp Leaky, Tanjung Puting National Park, Indonesia

Jouan & Rius / Lianas in cloud forest in Santa Elena Nature Reserve, Costa Rica

Kevin Schafer / Tropical rainforest interior showing lianas, Atlantic Forest, Una Biological Reserve, Brazil

Fabio Liverani / Lianas, epiphytes and other plants in rainforest tree near canopy, Tambopata National reserve, Amazonia, Peru

Thomas Marent / Tropical rainforest with lianas, Cockscomb Basin Wildlife Sanctuary, Belize

Karl Ammann / Bonobo {Pan paniscus} juvenile climbing lianas. Lola Ya Bonobo Sanctuary, Kinshasa, DR of Congo, 2007

Jouan & Rius / Twisted Trunk of large liana in Bunya Mountains National Park, Queensland, Australia

Jouan & Rius / Lianas in dry forest, Ankarana Special Reserve, Madagascar

Philippe Clement / Twisted lianas in Palo Verde NP, Costa Rica

Philippe Clement / Tropical Rainforest habitat, Carara National Park, Costa Rica

Philippe Clement / Twisted Lianas in Palo Verde NP, Costa Rica

Michael & Patricia Fogden / Tree trunk and twisted lianas in rainforest understory, Peru

Anup Shah / Orang utan {Pongo abelii} female Edita + baby Forester born 1.3.98 Sumatra Gunung Leuser NP Indonesia

Anup Shah / Orang utan {Pongo abelii} Edita + baby Forester + male. Sumatra, Gunung Leuser NP, Indonesia.

Michael & Patricia Fogden / Buttress roots and lianas, rainforest, Amazon Basin, Peru