Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) sub-adult female 'Mosoko' aged 8 years crossing a river, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic

Jack Dykinga / Scalding hot water continuously spouting behind layers of mineral deposits, Fly Geyser, Black Rock Desert, Great Basin Desert, Nevada, USA

Steven Kazlowski / Young Polar bear (Ursus maritimus) standing and trying to balance in shallow water along the Bernard Spit, 1002 area of the Arctic National Wildlife Refuge, North Slope of the Brooks Range, Alaska, Oc...

Steven Kazlowski / Young Polar bear (Ursus maritimus) standing and trying to balance in shallow water along the Bernard Spit, 1002 area of the Arctic National Wildlife Refuge, North Slope of the Brooks Range, Alaska, Oc...

Steven Kazlowski / Young Polar bear (Ursus maritimus) standing and trying to balance in shallow water along the Bernard Spit, 1002 area of the Arctic National Wildlife Refuge, North Slope of the Brooks Range, Alaska, Oc...

Michele Westmorland / Snorkeler swimming with harmless Jellyfish (Mastigias papua etpisonii), Jellyfish Lake, Rock Islands, Palau, Micronesia.

Michele Westmorland / Schooling fish around healthy reef system, Castle Rock, Komodo National Park, Indonesia.

George Sanker / Ellis River high in White Mountain National Forest. New Hampshire, October 2012.

Gavin Hellier / Women in colourful Saris collecting water, across the Jumna (Yamuna) river from Taj Mahal, UNESCO World Heritage Site, Agra, Uttar Pradesh, India, 2011, model released

Gavin Hellier / Elevated view from Victoria Peak, City Skyline and Victoria Harbour, Hong Kong, China 2009. No release available.

Gavin Hellier / Aerial view of the famous Blue Lagoon and Belcekiz beach along the 'Turquoise' coast, Oludeniz near Fethiye, Mediterrean Coast, Turkey 2008

Gavin Hellier / Elevated view over the Bosphorus and Sultanahmet from the Galata Tower in Istanbul, Turkey 2008