Nick Upton / European eel (Anguilla anguilla) elver migrating upstream, using an eel pass on the side of a weir, Somerset Levels, England, UK, July.

Will Watson / Atlantic salmon (Salmo salar) leaping a weir, Shrewsbury, River Severn, Shropshire, England, UK. November.

Alex Mustard / Backlit detail of branching fire coral (Millepora alcicornis) showing the hair like polyps, filled with stinging nematocysts. East End, Grand Cayman, Cayman Islands. Caribbean Sea.

Juergen Freund / Flock of Budgerigars (Melopsittacus undulatus ) drinking in an outback dam, Northern Territory, Australia.

Cyril Ruoso / Terraced rice fields, Bali, Indonesia.

Claudio Contreras / Canal between chinampas, a wetland agricultural system, at dawn, Xochimilco wetlands, Mexico City, November

Ernie Janes / Irrigation on potato field, Norfolk, UK, July

Claudio Contreras / Osprey (Pandion haliaetus) with fish catch, Cabo Pulmo National Park, Sea of Cortez (Gulf of California), Mexico, July

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