A blue tit among daffodils on St David's Day in Blaenpennal, Aberystwyth (© Philip Jones/Alamy Stock Photo)(Bing United Kingdom)
Volcano Llaima with Araucarias trees in the foreground, Conguillio National Park, Chile (© Fotografías Jorge León Cabello/Getty Images)(Bing United Kingdom)
Two female lions in the forest surrounding Lake Nakuru, Kenya (© Scott Davis/Tandem Stills + Motion)(Bing United Kingdom)
Old world swallowtail caterpillar for World Book Day (© ardea.com/Mary Evans/Tonci/Pantheon/SuperStock)(Bing United Kingdom)
Mineral-laden water in the Rio Tinto in Minas de Rio Tinto mining area, Huelva province, Andalusia, Spain (© David Santiago Garcia/Getty Images)(Bing United Kingdom)
Komodo National Park, Labuan Bajo, Flores, Indonesia (© Thrithot/Adobe Stock)(Bing United Kingdom)
Great blue herons in the Wakodahatchee Wetlands, Delray Beach, Florida, USA (© Marie Hickman/Getty Images)(Bing United Kingdom)
Mural of Frida Kahlo on an apartment building near the Biblioteca Vasconcelos in Mexico City, Mexico (© Jessica Sample/Gallery Stock)(Bing United Kingdom)
Foothills of the Diablo Range near San Jose, California, USA (© Jeff Lewis/Tandem Stills + Motion)(Bing United Kingdom)
Onkaparinga River, Port Noarlunga, South Australia (© plainpicture/AWL/Marco Bottigelli)(Bing United Kingdom)
Thor's Well at Cape Perpetua on the coast of Oregon, USA (© Cavan Images/Offset by Shutterstock)(Bing United Kingdom)
A balloon flies over the Pyramid of the Sun at sunrise in Teotihuacan, Mexico (© Marco Ugarte/AP Photo)(Bing United Kingdom)
Common rhododendrons in Semper Forest Park, Ruegen, Germany (© Sandra Bartocha/Minden Pictures)(Bing United Kingdom)
Mallard, Anas platyrhynchos, mother leading ducklings across road, Arundel, Sussex (© David Tipling/Universal Images Group via Getty Images)(Bing United Kingdom)
Almond blossoms in Central Valley, California, USA (© Jeffrey Lewis/Tandem Stills + Motion)(Bing United Kingdom)
Giant panda cub in Bifengxia Panda Base, Sichuan, China (© Suzi Eszterhas/Minden Pictures)(Bing United Kingdom)
Inisheer, the smallest of the three Aran Islands in Galway Bay, Ireland (© Chris Hill/Minden Pictures)(Bing United Kingdom)
Mount Etna erupting in 2013, Sicily, Italy (© Wead/Alamy Live News)(Bing United Kingdom)
Aerial view of the City of Adelaide shipwreck, Magnetic Island, Queensland, Australia (© Amazing Aerial Agency/Offset by Shutterstock)(Bing United Kingdom)
Sundial on Parnidis Dune, Curonian Spit, in Lithuania (© amoklv/Getty Images)(Bing United Kingdom)
Bluebell flowers carpet the Hallerbos forest floor, Flanders, Belgium (© Jason Langley/plainpicture)(Bing United Kingdom)
Lake Hintersee surrounded by mountains, Berchtesgaden, Bavaria, Germany (© Offset by Shutterstock)(Bing United Kingdom)
Satellite image of the Mania River in Madagascar (© Nasa Earth Observatory image by Joshua Stevens, using Landsat data from the US Geological Survey)(Bing United Kingdom)
Humpback whale mother pushes her sleeping calf to surface, Maui, Hawaii, USA (© Ralph Pace/Minden Pictures)(Bing United Kingdom)
The Lagangarbh hut nestles in the valley beneath Buachaille Etive Mòr, Glencoe (© Sophia Spurgin Photography/iStock/Getty Images Plus)(Bing United Kingdom)
Cradle Mountain-Lake St Clair National Park, Tasmania, Australia (© Paparwin Tanupatarachai/Getty Images)(Bing United Kingdom)
Mountain hare running across snow-covered upland, Scottish Highlands (© SCOTLAND: The Big Picture/Minden Pictures)(Bing United Kingdom)
Lyon astronomical clock, Lyon, France (© kyolshin/Alamy)(Bing United Kingdom)
Screech owl resting in a tree cavity, Massapequa Preserve, New York, USA (© Vicki Jauron, Babylon and Beyond Photography/Getty Images)(Bing United Kingdom)
Detail of an ostrich fern in spring, Washington, USA (© Stephen Matera/Tandem Stills + Motion)(Bing United Kingdom)
Wayag Island at Raja Ampat, Indonesia (© Amazing Aerial Agency/Offset by Shutterstock)(Bing United Kingdom)