Gary Bell/ Oceanwide / Coastal rock arch at sunset, Bermagui, New South Wales, Australia

Benjamin Olson / Rock formations and mountain range, Cordillera Paine, Torres del Paine National Park, Chile

Phil Savoie / Swift (Apus apus) flock screaming in flight against blue sky and clouds, Monmouthshire, Wales, UK, July.

Pete Oxford / Cloud forest canopy, Andes, Ecuador

Enrique Lopez-Tapia,Enrique Lopez-Tapia / View of the Godwin-Austen Glacier, Central Karakoram National Park, Pakistan, June 2007.

Ben Hall / Orcas (Orcinus orca) pod feeding on herring, wide shot showing surrounding landscape, Iceland, January 2013

Benjamin Barthelemy / Banner cloud formation around the summit of the Matterhorn (4,478m), Switzerland, September 2011.

Gavin Hellier / Cloud formation and wooden jetty at Barrow Bay landing, Derwent Water, Lake District National Park, Cumbria, UK November 2008

Fergus Gill / 2020VISION / The rugged cliffs of Stac Pollidh in cloud and mist and lit by evening light. Cairngorms National Park, Scotland, July.

Ernie Janes / Storm clouds building up off coasts of Norfolk, Weybourne Cliffs, Norfolk, UK, November

Bryan and Cherry Alexander / Dramatic 'Undulatus asperatus' cloud formation as a storm builds at dawn over Qaanaaq, Inglefield Bay. Northwest Greenland, September 2008. This cloud formation was first proposed as a new type of clo...

David Welling / A thunderstorm drops heavy rain over the hoodoo sandstone formations. Bryce Canyon National Park, Utah, USA, August.