Philippe Clement / Fleet Lagoon at Abbotsbury and tourists walking on Chesil Beach tombolo, one of three major shingle structures in Britain along the Jurassic Coast, World Heritage Site, Dorset, UK, November 2012. No r...

Graham Eaton / Split-level image of Seaweed growth on a groyne, Abersoch, Wales, April 2010

Jouan & Rius / View of Pinnacles desert after heavy rainfall, Nambung National Park, Western Australia. August 2009

Jouan & Rius / Limestone formations in the Pinnacles desert, Nambung National park, Western Australia. July 2009

Wild Wonders of Europe / Radisics / Ice forming stalagmite structures in Ledena Pecina (an ice cave) inside Obla Glava (Rounded head peak) Durmitor NP, Montenegro, October 2008

Wild Wonders of Europe / Radisic / Ice forming stalagmite structures in Ledena Pecina (an ice cave) inside Obla Glava (Rounded head peak) Durmitor NP, Montenegro, October 2008

Solvin Zankl / Seeds of Oxeye daisy (Chrysanthemum leucanthemum), Europe. Dispersal is coincidental by wind, animals or water. The seeds lack any obvious structures for specialised dispersal.

Adrian Davies / Close up of the underside a Wood hedgehog fungus (Hydnum repandum), showing its teeth-like spore-bearing structures, Surrey, England, UK, October.

Alex Hyde / Lichen (Cladonia diversa) showing red apothecia (spore-producing structures). Cairngorms National Park, Grampian Mountains, Scotland, UK, February.

John Beatty / 2020VISION / Plastic gully blocking structures in eroded peat moorland drainage channels.

Sue Flood / Marae Taputapuatea is a large marae complex at Opoa in Taputapuatea, on the south eastern coast of Raiatea. The site features a number of marae and other stone structures and was once considered the c...

Benoit Stichelbaut / Chausey Islands at low tide from the air, showing oyster farming structures. Normandy, France 2004

Steven David Miller / People walking along the Hervey Bay Jetty in the Great Sandy Strait Marine Park. Queensland, Australia October 2009

Willem Kolvoort / Reproductive structures of Stoneworts, freshwater green algae, Lake Ohrid, Albania, Eastern Europe, May

Georgette Douwma / Artificial reef / EcoReef designed by Mark Erdmann, with diver. Ceramic structures placed on areas bomb damaged in the 1970s, to encourage coral ecosystem regrowth. Bunaken National Park, North Sulawe...

Georgette Douwma / Artificial reef / EcoReef designed by Mark Erdmann, with diver. Ceramic structures placed on areas bomb damaged in the 1970s, to encourage coral ecosystem regrowth. Bunaken National Park, North Sulawe...

Georgette Douwma / Artificial reef / EcoReef designed by Mark Erdmann, with diver. Ceramic structures placed on reef, bomb damaged in the 1970s. Bunaken National Park, North Sulawesi, Indonesia.

Georgette Douwma / Artificial reef / EcoReef designed by Mark Erdmann, with diver. Ceramic structures placed on areas bomb damaged in the 1970s, to encourage coral ecosystem regrowth. Bunaken National Park, North Sulawe...

Georgette Douwma / Artificial reef / EcoReef designed by Mark Erdmann, with diver. Ceramic structures placed on areas bomb damaged in the 1970s, to encourage coral ecosystem regrowth. Bunaken National Park, North Sulawe...

Georgette Douwma / Artificial reef / EcoReef designed by Mark Erdmann, with diver. Ceramic structures placed on reef, bomb damaged in the 1970s. Bunaken National Park, North Sulawesi, Indonesia.

Sandesh Kadur / A Khasi woman and children wash clothes along a stream. In the background is a living-root double-decker bridge in the background. These structures are created by entwining the aerial roots of the Fic...

Floris van Breugel / A hiker walking through impressive structures found in Death Valley's Fall canyon, California, USA, January 2010.

Alex Hyde / Sensory structures on underside of Scorpion {Scorpiones sp} known as pectines, Andasibe-Mantadia NP, Madagascar

Eric Baccega / Inuit vestige built from whale bone, from the Thule culture (-3000 BC), Resolute village, Cornwallis Island, Nunavut, Canada, August 2010

Eric Baccega / Inuit vestige built from whale bone from the Thule culture (-3000 BC) Resolute village, Cornwallis Island, Nunavut, Canada, August 2010

Gerrit Vyn / Natural gas rig in Mobile Bay. Mobile County, Alabama, USA, July 2010.

Gerrit Vyn / Natural gas platform and Shrimp boat skimmer in Mobile Bay. Baldwin County, Alabama. USA, June.

John Waters / Portal Tomb, Poulnabrone, The Burren, Country Clare, Republic of Ireland.

John Waters / Pantre Ifan Megalithic Tomb, Dawn, Pembrokeshire, Wales

Jerry Monkman / A yurt at Milan Hill State Park in Milan, New Hampshire, USA. September 2009

Jouan & Rius / Rock formations, Kimberley sand beach, Western Australia. July 2009

Jouan & Rius / Limestone formations in the Pinnacles desert, Nambung National Park, Western Australia. July 2009

Jouan & Rius / Limestone formations in the Pinnacles desert, Nambung National park, Western Australia. July 2009

Jouan & Rius / Limestone formations in the Pinnacles desert, Nambung National park, Western Australia. July 2009

Jouan & Rius / Aerial view of Limestone formations in the Pinnacles desert, Nambung National Park, Western Australia. July 2009

Jouan & Rius / Limestone formations in the Pinnacles desert, Nambung National Park, Western Australia. July 2009

Jouan & Rius / Rainbow over the Limestone formations in the Pinnacles desert, Nambung National Park, Western Australia. July 2009

Jouan & Rius / Aerial view of Limestone formations in the Pinnacles desert, Nambung National Park, Western Australia. July 2009

Jouan & Rius / Close up of a single Limestone formation in the Pinnacles desert, Nambung National Park, Western Australia. July 2009

Robert Thompson / Lichen (Cladonia ficerkeana) with red spore producing reproductive structures, Killarney National Park, County Kerry, Republic of Ireland, April

Robert Thompson / Lichen (Cladonia coccifera) with red spore-producing reproductive structures, growing in hummock of moss, Mourne Mountains, County Down, Northern Ireland, UK, January

Inaki Relanzon / Bridge over the Ayeyarwady River, Sagaing divission, Myanmar, Burma. September 2009

Robert Thompson / Lichen {Cladonia floerkeana} with red reproductive structures, Rehaghy Mountain, County Tyrone, Republic of Ireland, January

Fabio Liverani / Person looking up in the Palombaro, a network of underground structures and courtyards, under the church of Purgatorio Vecchio, used to collect water until the 1930s, Matera, Basilicata Region, Southe...

Fabio Liverani / Person in the Palombaro, a network of underground structures and courtyards, under the church of Purgatorio Vecchio, used to collect water until the 1930s, Matera, Basilicata Region, Southern Italy, J...

Fabio Liverani / Person looking up in the Palombaro, a network of underground structures and courtyards, under the church of Purgatorio Vecchio, used to collect water until the 1930s, Matera, Basilicata Region, Southe...

Shattil & Rozinski / Pronghorn antelope (Antilocapra americana) herd grazing, Pinedale, Wyoming, USA. Gasoline storage structures in background.

Adrian Davies / Cross section through tulip (Tulipa sp.) showing stamens and other structures, UK

Georgette Douwma / Nudibranch {Risbecia tryoni} starting mating. The two purple sausage shaped structures by the gill are the eggs sacs of a parasitic copepod living inside the slug. Rinca, Indonesia

Katherine Feng / Giant Panda (Ailuropoda melanoleuca) cubs playing on structures near landslide after the May 12, 2008 earthquake, CCRCGP, Wolong, China

Katherine Feng / Giant Panda (Ailuropoda melanoleuca) cubs playing on structures near landslide after the May 12, 2008 earthquake, CCRCGP, Wolong, China

Katherine Feng / Giant Panda (Ailuropoda melanoleuca) cubs playing on structures near landslide after the May 12, 2008 earthquake, CCRCGP, Wolong, China

Katherine Feng / Giant Panda (Ailuropoda melanoleuca) cubs playing on structures near landslide after the May 12, 2008 earthquake, CCRCGP, Wolong, China

Katherine Feng / Giant Panda (Ailuropoda melanoleuca) young playing on structures after the May 12, 2008 earthquake and landslides, CCRCGP, Wolong, China

Katherine Feng / Giant Panda (Ailuropoda melanoleuca) cubs playing on structures near landslide after the May 12, 2008 earthquake, CCRCGP, Wolong, China

Juergen Freund / Aerial of Mud flats and mangroves, and Derby Jetty. Derby, Kimberley, Western Australia

Juergen Freund / Schooling fish between pilons and diver beneath the 2km long Busselton Jetty. Busselton, Western Australia

Philippe Clement / Breakwater covered in green seaweed (Cladophora rupestris) along the North Sea coast, Belgium

Philippe Clement / Breakwater covered in green seaweed (Cladophora rupestris) along the North Sea coast, Belgium

Philippe Clement / Neolithic Dolmen, burial chamber site, from the Iron Age, Liniez, France

Patricio Robles Gil / Rock structures in the Chihuahuan Desert, Big Bend National Park, Texas

Ingo Arndt / Polychaete (Tomopteris sp) showing parapodia, paddle-like structures, Weddell Sea, Antarctica

Ingo Arndt / Polychaete (Tomopteris sp) showing parapodia, paddle-like structures, Weddell Sea, Antarctica

Pete Cairns / Hoodoo sandstone structures, Bryce Canyon NP, Utah, USA

Solvin Zankl / Seeds of Oxeye daisy (Chrysanthemum leucanthemum), Europe. Dispersal is coincidental by wind, animals or water. The seeds lack any obvious structures for specialised dispersal.

Solvin Zankl / Seeds of Oxeye daisy (Chrysanthemum leucanthemum), Europe. Dispersal is coincidental by wind, animals or water. The seeds lack any obvious structures for specialised dispersal.

Kim Taylor / Freshwater worm {Dero} amongst pond debris

Kim Taylor / Leech {Helobdella stagnalis} showing internal structures

Kim Taylor / Leech {Herpobdella sp} showing internal structures

Michael Hutchinson / Volcanic basalt log structures on La Catedral rock, El Teide NP, Tenerife

Michael Hutchinson / Basalt log structures formed by volcanic activity, El Teide, Canadas National Park, Tenerife

Steven David Miller / Aerial view of Bungle Bungle range, eroded sandstone domes, Purnululu NP W Australia - beehive structures with bands of clay, algae and iron

GEORGETTE DOUWMA / Stromatolites - fossilsed cyano bacteria (the oldest forms of life on Earth) which lived together in communities forming the structures called stromatolites, Hamelin Pool, Shark Bay, Western Australia

Adrian Davies / Liverwort {Marchantia polymorpha) female reproductive structures. UK

Gavin Hellier / The white Church of Panagia Paraportiani, Hora, Mykonos Island, Cyclades, Greece Europe

Paul D Stewart / Nemiana simplex, a White Sea Ediacaran fossil (upper Vendian) in the sandstone shales from the Novodnestrovsky Quarry, Podolia, Ukraine. The ediacaran biota existed from about 580 to 540 million years...

Angelo Giampiccolo / Fixed fishing pen nets supported by a wooden frame in shallow waters off the coast of Dakak Island, Philippines.

Jan Vermeer / Children climbing on dolmens, ancient burial structures, Denthe region, Netherlands