Sandra Bartocha / Sun rays shining through European beech woodland (Fagus sylvatica). Serrahn, Muritz-National Park, World Natural Heritage site, Germany, Europe. November 2015.

Konrad Wothe / View up into canopy with sun rays shining through the leaves, lowland rainforest, Panguana Reserve, Huanuco province, Amazon basin, Peru.

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.

Sandra Bartocha / Silver birch (Betula pendula) and Scots pine (Pinus sylvestris) trunks in snow, Muritz-National Park, Germany, January.

Olga Kamenskaya / Ice formations in snow on Lake Baikal, Siberia, Russia, March 2007.

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.

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...

Alex Mustard / Male Great white shark (Carcharodon carcharias) with sunrays, Guadalupe Island, Mexico, Pacific Ocean.

Neil Lucas / Sundog / Parhelion (circle of light around the sun) with large ice fumerole in the foreground, McMurdo Sound, Ross Sea, Antarctica, November 2008

Norbert Wu / California Sea Lion (Zalophus californianus) playing in shallow water, Channel Islands, California