Sandra Bartocha / Sun rays shining through European beech woodland (Fagus sylvatica). Serrahn, Muritz-National Park, World Natural Heritage site, Germany, Europe. November 2015.
Guy Edwardes / Lanyon Quoit ancient burial chamber, Madron, Cornwall, England, UK. September 2015.
Konrad Wothe / View up into canopy with sun rays shining through the leaves, lowland rainforest, Panguana Reserve, Huanuco province, Amazon basin, Peru.
Chris & Monique Fallows / King penguin (Aptenodytes patagonicus) colony at sunrise. Grytviken, South Georgia Island.
Alex Hyde / Alpine meadow, Nordtirol, Austrian Alps, July 2014.
Floris van Breugel / Two Guanacos (Lama guanicoe) at edge of lake with Cuernos del Paine beyond. Torres del Paine National Park, Chile, June 2014.
Olga Kamenskaya / Ice formations in snow on Lake Baikal, Siberia, Russia, March 2007.
Ben Cranke / Conifer tree bending over under weight of snow, Kuusamo, Finland. February 2011.
Sandra Bartocha / Silver birch (Betula pendula) and Scots pine (Pinus sylvestris) trunks in snow, Muritz-National Park, Germany, January.
Floris van Breugel / Glass beach at sunset - a former dump site, in which the glass has now become pebbles of sea glass. MacKerricher State Park. California. USA. January 2013
Michel Roggo / Brown bear (Ursus arctos beringianus) fishing for Sockeye salmon in the Ozernaya River, Kamtchatka, Russia, August
Sven Zacek / Rays of sunshine behind pine trees, Southern Estonia, May early morning.
Gavin Hellier / Panoramic view of the foggy skyline of San Francisco at sunrise, California, USA 2011
Floris van Breugel / Tiny thimble jellyfish (Linuche unguiculata) drift with the current in the calm turquiose waters of a lagoon in Ofu, American Samoa. The window of sky is called Snell's Window, caused by refraction of...
Graham Eaton / A split-level image of a mountain stream, in autumn, with water droplets on lens, Nant Ffrancon Valley, Snowdonia NP, Gwynedd, Wales, UK, October
Juan Carlos Munoz / Olive tree (Olea europaea) in Sierra de Cardena y Montoro Natural Park. Andalusia, Spain, Feb 2010
Alex Mustard / Male Great white shark (Carcharodon carcharias) with sunrays, Guadalupe Island, Mexico, Pacific Ocean.
Neil Lucas / Panoramic view, Little Razorback Island, Dellbridge Islands, Antarctica, October 2008, Digitally stitched image
Solvin Zankl / As soon as it entered the water the young Olive ridley sea turtle (Lepidochelys olivacea) struggles against the swell to swim away from the coast. The swimming frenzy lasts for approximately 48 hours...
Michele Westmorland / Split level view of scuba diver with PR Aquanauts boat in Grenada, Caribbean. May 2009. Property released and diver model released.
Edwin Giesbers / Arctic tern (Sterna paradisaea) in flight, vocalising, aggresive behaviour, Farne Islands, Northumberland, UK, June
Neil Lucas / Sun shining through the branches of a Dragons blood tree (Dracena cinnibaris) in mountainous desert, Socotra, Yemen, February 2007
Neil Lucas / Sundog / Parhelion (circle of light around the sun) with large ice fumerole in the foreground, McMurdo Sound, Ross Sea, Antarctica, November 2008
Neil Lucas / Dragons blood trees (Dracena cinnibaris) and Desert rose (Adenium obesum socotranum) in Momi Valley, Socotra Island, Yemen, February 2008
Neil Lucas / Glacier rising up out of sea ice with ice crack visible, Ross Sea, Antarctica, November 2008
Jerry Monkman / Man bouldering in "The Boulders" section of Pawtuckaway State Park, New Hampshire, USA, September 2008. Model released.
Jeff Vanuga / Sunset over Brooks Mountain in the Shoshone National Forest, Wyoming, USA, December 2008
Michel Roggo / Tench (Tinca tinca) on the surface of a turbid marsh pond, with Rudd (Scardinius erythrophthalmus) above, Fribourg, Switzerland, 2004
Norbert Wu / California Sea Lion (Zalophus californianus) playing in shallow water, Channel Islands, California
Norbert Wu / Scuba diver exploring ice caves below Weddell Seal (Leptonychotes weddellii) breathing holes, life below feeds on seal feces, Antarctica
Norbert Wu / Giant Kelp (Macrocystis pyrifera) forms dark, lush canopy forest in cold waters, southern California
Norbert Wu / Sunlight shafting through blue water, Pacific Ocean
Chris Newbert / Soft Coral (Dendronephthya sp) outcroppings and Basslet (Pseudanthias sp), Red Sea, Egypt