Nigeria: Various shots of crude oil leaking from a pipeline and flowing into a stream, hands drenched in oil.

Texas, USA. Cattle grazing in a grassy field with a 'nodding donkey' oil pump in operation in the background.

A crab crawls on oil stained rocks and runs to hide under a rock.

USA. A 'nodding donkey' oil pump in operation surrounded by leafy trees. Heat creates a visible haze effect in the air.

USA. Medium close up view of a rusted 'nodding donkey' oil pump in operation.

USA. Close-up view of a 'nodding donkey' oil pump in operation framed against a blue sky.

Barrow Island, Australia. A 'nodding donkey' oil pump silhouetted against the setting sun. A golden glow fills the frame.

A 'nodding donkey' oil pump in operation viewed through leafless twigs in Texas, USA.

Baghdad, Iraq: Wide view of the flame rising from the Doura oil refinery, oil storage depots and a close up of the installation of the refinery.

Barrow Island, Australia. A 'nodding donkey' oil pump silhouetted against the setting sun. Clouds creep across the sun's face.

Barrow Island, Australia. A 'nodding donkey' oil pump silhouetted against the setting sun. Clouds creep across the sun's face.

Siberia, Russia: Oil wells and pumps at Yukos Oil's main operation unit 'Yuganskneftegaz'

USA. Wide view of 'nodding donkey' oil pumps operating in a green oil field.

USA. A 'nodding donkey' oil pump in operation surrounded by palm trees.

Barrow Island, Australia. Low-angle view of a 'nodding donkey' oil pump operating against a blue sky background.

Close-up view of a 'nodding donkey' oil pump in operation silhouetted against a golden sunset in Texas, USA.

A 'nodding donkey' oil pump in operation silhouetted against a golden sunset in Texas, USA.

Louisiana, USA: Close up shot of a pelican sitting in oily water and covered in brown oil residue.

USA. View of several large cylindrical oil storage tanks.

Barrow Island, Australia. A 'nodding donkey' oil pump operates on red soil against a blue sky background.

USA. Medium close up view of several 'nodding donkey' oil pumps in operation. Heat creates a visible haze effect in the air.

An anonymous person holds a bird covered in oil carefully in his hands.

Barrow Island, Australia. Waste gas burns in bright flames in the foreground while a 'nodding donkey' oil pump operates in the background.

USA. 'Nodding donkey' oil pumps in operation framed against a blue sky.

Kirkuk, Iraq: Various long shots of Kirkuk showing buildings, mosque and an oil gas flame in the background, wider shot of the oil gas flame burning, wide shot of a church, shots of traffic.

Close up of light glistening iridescently off an oil slick on water in Alaska.

Barrow Island, Australia. A silhouetted 'nodding donkey' oil pump operates in the background while waste gas burns in a bright flame in the foreground throwing a visible haze effect into the air.

Mexico: Aerial view of boats positioning oil containment booms on the ocean surface

Barrow Island, Australia. A 'nodding donkey' oil pump operates on a grassy plain against a blue sky.

A bird covered in oil stands on a beach, flapping its wings.

Venezuela: Various shots of rubbish covered in oil on the sea shore.

Barrow Island, Australia. A silhouetted 'nodding donkey' oil pump operates in the background while waste gas burns in a bright flame in the foreground throwing a visible haze effect into the air.

A bird covered in oil swims towards the shore and struggles to get out of the water.

Grand Isle, USA: Close up shots of rust coloured oil slick in the Gulf of Mexico on a calm day.

Low-angle view of a 'nodding donkey' oil pump in operation framed against a blue sky.

Barrow Island, Australia. A silhouetted 'nodding donkey' oil pump operates in the background while waste gas burns in a bright flame in the foreground throwing a visible haze effect into the air.

Aerial shot of cloudy oil-stained water beside the coast.

Louisiana, USA: Air to Air shot of a Blackhawk helicopter delivering sand for a breakwater.

An unidentified person shovelling up oily sand on a beach.

Oily waves washing up onto the sand on a beach in Taean, South Korea.