Bence Mate / Leaf cutter ant (Atta sp) female worker carrying leaf to nest, with a smaller 'minor' ant riding. The minor's job is to protect her sister from parasitic flies. Costa Rica, December. Highly Commended,...

Kirkendall-Spring Photographers / Vicky Spring next to a small tarn, Lyman Lakes Basin, Glacier Peak Wilderness, Wenatchee National Forest, Washington, USA, September 2014. Model released.

Juan Carlos Munoz / Tourists hiking along dirt track, Triglav National Park, Julian Alps, Slovenia, October 2010.

Kirkendall-Spring / Hiker crossing Newton Creek, Elk Meadows Trail, Mount Hood Wilderness. Oregon, USA, July 2014. Model released.

Ernie Janes,Ernie Janes / Walkers on footpath in farmland from Wiveton Downs, North Norfolk, UK, March

Bert Willaert / Green-backed Firecrown (Sephanoides sephanoides) nesting next to a hiking trail in Mocha Island National Reserve, Mocha Island, Chile, December

Juan Carlos Munoz,Juan Carlos Munoz / Hikers climbing Mount Etna in the mist, Etna, Sicily, Italy, October 2007

Oriol Alamany / Hiker walking the Calanche de Piana, Corse-du-Sud, Corsica Island, France, Model released.

Oriol Alamany / Woman hiker sheltering from rain at the hermitage of Sant Aniol, Espai Natural Alta Garrotxa, Pyrenees, Catalonia, Spain. Model released

Oriol Alamany / Hikers crossing scree along the 'Carros de foc' trail, Boi valley, Aiguestortes i Estany de Sant Maurici National Park, Pyrenees, Catalonia, Spain. No release available.

Peter Cairns / Woman standing in front of Skogafoss waterfall, Iceland. Model released.

David Noton / Person walking along sand dunes, Namib Desert, Namibia, Southern Africa. Model released.