Tony Heald / African elephant with Oryx in background, Etosha NP, Namibia. (Loxodonta africana) & (Oryx gazella)

Benoit Stichelbaut / Spectators admire tall ships moored in Port de Rosmeur, Douarnenez Maritime Festival, France, July 2008

Merryn Thomas / Enormous pasty for sale at Morris' Cornish Pasty shop, for the 2008 Funchal 500 Tall Ships Regatta, Falmouth, Cornwall, UK

Merryn Thomas / Fishing trawler is dwarfed by approaching tall ship "Sedov" at the Funchal 500 Tall Ships Regatta race day, Saturday 13th September 2008. Falmouth, Cornwall, UK

Benoit Stichelbaut / Brig "Astrid" under sail at Douarnenez Maritime Festival, France, July 2008

Merryn Thomas / Russian tall ship "Mir" at the Funchal 500 Tall Ships Regatta race day, Saturday 13th September 2008. Falmouth, Cornwall, UK

Merryn Thomas / Russian tall ship "Mir" at the Funchal 500 Tall Ships Regatta race day, Saturday 13th September 2008. Falmouth, Cornwall, UK

Pete Oxford / Galapagos Giant Tortoise, Saddleback form (Geochelone elephantophus hoodensis / Chelonoidis nigra hoodensis) Charles Darwin Research Station, Puerto Ayora, Santa Cruz Island, Galapagos

Pete Oxford / Galapagos Giant Tortoise, Saddleback form (Geochelone elephantophus hoodensis / Chelonoidis nigra hoodensis) Charles Darwin Research Station, Puerto Ayora, Santa Cruz Island, Galapagos

Aflo / N-3603 View up to canopy of of Sequoia Redwoods, USA.

Aflo / N-0301 of trunk of 4000-year-old tree, Puerto Montte, Chile.

Alan Watson / Baobab tree (Adansonia rubrostipa) in flower, in spiny forest, Reniala Reserve, SW Madagascar, January 2009

Thomas Lazar / Trunks of Giant Sequoia trees (Sequoiadendron giganteum) with smaller trees behind, Western Slope Sierra Nevada Mnts, Sequoia National Park, California, USA

Thomas Lazar / Towering trunk of Giant Sequoia tree (Sequoiadendron giganteum) in fog, Western Slope Sierra Nevada Mnts, Sequoia National Park, California, USA

Thomas Lazar / Looking up the trunk of Giant Sequoia tree(Sequoiadendron giganteum) Western Slope Sierra Nevada Mnts, Kings Canyon National Park, California, USA

Thomas Lazar / Towering trunks of Giant Sequoia tree (Sequoiadendron giganteum) in fog, Western Slope Sierra Nevada Mnts, Sequoia National Park, California, USA

Thomas Lazar / Trunks of Giant Sequoia trees (Sequoiadendron giganteum) with smaller trees behind, Western Slope Sierra Nevada Mnts, Sequoia National Park, California, USA

Thomas Lazar / Trunks of Giant Sequoia trees (Sequoiadendron giganteum) with smaller trees behind, Western Slope Sierra Nevada Mnts, Sequoia National Park, California, USA

Thomas Lazar / Towering trunk of Giant Sequoia tree (Sequoiadendron giganteum) in fog, Western Slope Sierra Nevada Mnts, Sequoia National Park, California, USA

Thomas Lazar / Looking up the trunk of Giant Sequoia tree(Sequoiadendron giganteum) Western Slope Sierra Nevada Mnts, Kings Canyon National Park, California, USA. Did you know? Sequoias were named after Sequoyah, th...

Matthew Maran / Person standing beside the trunk of a Western Red Cedar {Thuja plicata} The Big Tree Trail, Meares Island, Clayoquot Sound, Vancouver Island, BC, Canada

Steven David Miller / A large Karri tree (Eucalyptus diversicolor) called The Gloucester Tree, a fire lookout tree, with three people climbing, Gloucester National Park, Pemberton, Western Australia

Pete Oxford / Baobab tree {Adansonia grandidieri} Morondava, Madagascar

John Waters / Looking up the trunks of a Jaguey blanco tree {Ficus trigonata} Khao Yai NP, Thailand

Nature Production / Giant Sequoia trees {Sequoiadendron giganteum} 2000-2500 years old, 500m in height, Sequoia National Park, California, USA

Nature Production / Man standing beside termite mound, Australia

Warwick Sloss / Looking up trunk of Baobab tree (Adansonia grandidieri) Morondava, Western Madagascar on location for BBC Planet Earth 'Forests'

James Aldred / Looking down on James Aldred climbing inside the hollow trunk of a Strangler fig tree {Ficus sp}, Khao Yai NP, Thailand, 2003, BBC NHU 'Jungles'

James Aldred / Canopy scientist, John Pike, being winched up to study epiphytic Birds nest fern {Asplenius sp} growing in lowland Dipterocarp tree {Shorea shorea} Danum valley, Sabah, Borneo, Malaysia, 2005

James Aldred / Looking down from rainforest canopy on scientist climbing a giant Mengaris tree {Koompassia excelsa} Danum valley, Sabah, Borneo, Malaysia, 2002

James Aldred / Canopy scientist, John Pike, being winched up to study epiphytic Birds nest fern {Asplenius sp} growing in lowland Dipterocarp tree {Shorea shorea} Danum valley, Sabah, Borneo, Malaysia, 2005

James Aldred / Bill Hatcher and Tom Greenwood climbing a giant Mengaris tree {Koompassia excelsa} during National Geographic Society expedition to find world's tallest tropical tree, Oil palm {Elaeis sp} plantations...

Andrew Parkinson / Roots of Giant strangler fig tree {Ficus sp} Daintree Rainforest NP, Queensland, Australia

Michael Hutchinson / Coast Giant redwood tree {Sequoia sempervirens} hollowed out by fire but still alive, Redwood NP, California, USA

Michael Hutchinson / Man beside three trunked Coast Giant redwood tree {Sequoia sempervirens} Prairie Crekk Park, California, USA

Michael Hutchinson / Man beside three trunked Coast Giant redwood tree {Sequoia sempervirens} Prairie Crekk Park, California, USA

Michael Hutchinson / View along the fallen log of a Coast Giant redwood trees {Sequoia sempervirens} Redwood NP, California, USA. Tallest trees in the world.

Michael Hutchinson / Coastal Giant Redwood tree {Sequoia sempervirens} which has sprouted a second trunk, Redwood NP, California, USA

Niall Benvie / Meikleor beech hedge {Fagus sylvatica} with person. World's tallest. UK.

Philippe Clement / Giant sequoia tree in park {Sequoiadendron giganteum} Belgium

Richard Du Toit / Reticulated giraffe portrait {Giraffa camelopardalis reticulata} Laikipia, Kenya

David Kjaer / People beside Giant sequoia tree {Sequoiadentron giganteum} Sequoia NP, CA, USA

Niall Benvie / Ancient pedunculate oak Bialowieza National Park Poland

Robert Valentic / Sand goanna standing threat display {Varanus panoptes panoptes} Queensland, Australia

Robert Valentic / Sand goanna standing threat display {Varanus panoptes rubidus} Western Australia

Martin Gabriel / Swamp gum tree {Eucalyptus regnans} shedding bark Mt Field NP, Tasmania - tallest flowering plant in the world

Onne van der Wal / J-Class classic "Ranger" and tall ship sailing off Newport during the Tall Ships Parade, Rhode Island, USA

Erwan Quéméré / Restored oyster boat sailing in the shadow of a three masted square rigged tall ship in the big Brest gathering in Brittany, France.

Erwan Quéméré / Ukranian three masted square rigged Tall Ship "Khersones", Brest 2000. Brittany, France.

Erwan Quéméré / Ukranian three masted square rigged Tall Ship "Khersones", Brest 2000. Brittany, France.