Dave Bevan / Male Great spotted woodpecker (Dendrocopos major) descending down a wooden electricity pole, Carmarthenshire, Wales, UK, June.

Dave Bevan / Male Great spotted woodpecker (Dendrocopos major) flying to a nest hole in an electricty pole and feeding chick, Carmarthenshire, Wales, UK, June.

Pascal Kobeh / 'Lotus', an artificial reef built in 2001 with a steel frame with a mild electrical current which encourages the growth of coral, Ihuru Island, North Male Atoll, Maldives, Indian Ocean. Small reprodu...

Sam Hobson / Fallow deer (Dama dama) buck crossing road under street lights. London, UK. January.

Tom Gilks / Basic electric wiring linking homes in a slum with a diesel powered generator, Remba Island, Lake Victoria, Kenya.

Nick Garbutt / The view at night from 'At the Top', 124th floor of the Burj Khalifa, the world's tallest building at 829.8m at night. Dubai, United Arab Emirates. April 2013

Cheryl-Samantha Owen / West coast rock lobster (Jasus lalandii) commercial fishing boat (James Archer) leaves the Saldhana Bay harbour before the break of dawn. The lights of the town and the lighthouse flash on the horizon...

Sven Zacek,Sven Zacek / Kopu lighthouse - the oldest lighthouse in Estonia, on Hiiumaa island. August 2011.

Pat Tuson / Electric car recharging at an Elektrobay Electric Vehicle Recharging Site in an urban street, London Borough of Islington, England UK

Juergen Freund / Crate of Spectacled flying fox (Pteropus conspicillatus) babies just arrived by plane from Brisbane after months of care, ready to be returned to the Tolga Bat Hospital for release back to the wild, A...

Hanne & Jens Eriksen / Lanner falcon {Falco biarmicus} dead, with jesses caught in electrical wires, Sohar, Oman

Norbert Wu / American Paddlefish (Polyodon spathula) can sense electrical fields with long paddle, native to Mississippi River drainage system