Bunda Cliffs on the Great Australian Bight, South Australia (© Oliver Strewe/Lonely Planet Images/Getty Images)(Bing Australia)

Hikers on Franz Josef Glacier, New Zealand (© Keri Oberly/Aurora Photos)(Bing Australia)

Red fox mother play-fighting with kit (© Konrad Wothe/Minden Pictures)(Bing Australia)

An osterbaum (Easter tree) in Saalfeld, Germany (© Chromorange/Alamy)(Bing Australia)

Diver in a cenote near Akumal, Mexico (© Paul Nicklen/Getty Images)(Bing Australia)

Palais Des Congres De Montreal, Canada (© Mark Tomalty/Axiom)(Bing Australia)

Gardena Pass and the Sella Group in the Dolomites, Italy (© Shutterstock)(Bing Australia)

Lightning north of Perth, Western Australia (© Craig Eccles/Solent News/Rex Features)(Bing Australia)

Black-webbed tree frogs (© Hendy MP/Solent News/REX)(Bing Australia)

Petrified wood in the Petrified Forest National Park, Arizona, USA (© Ian Shive/Tandem Stills + Motion)(Bing Australia)

Carrick-a-Rede rope bridge near Ballintoy, Northern Ireland (© Chris Hill/Getty Images)(Bing Australia)

Akshardham in Delhi, India (© AirPano)(Bing Australia)

Japanese robin, Yatsugatake, Nagano, Japan (© Gouichi Wada/Minden Pictures)(Bing Australia)

Fern and gum trees in Sherbrooke Forest, Victoria, Australia (© Koolstock/MasterFile)(Bing Australia)

Spring on Mount Yoshino in Nara Prefecture, Japan (© Sean Pavone/Alamy)(Bing Australia)

Pair of Great Crested Grebes (Podiceps cristatus) during their elaborate courtship dance (© Andrew Parkinson/Corbis)(Bing Australia)

Pear Lake in Sequoia National Park, California (© Marc Muench/Tandem Stills + Motion)(Bing Australia)

Aerial picture, field structure before rice harvestation, Guilin, Guanxi, China (© imageBROKER/Superstock)(Bing Australia)

Flood plains in the Pantanal, Brazil (© Luciano Candisani/Minden Pictures)(Bing Australia)

Bluespotted ribbontail ray (Taeniura lymma) in the Indian Ocean (© Jeff Rotman/NPL/Minden Pictures)(Bing Australia)

Hoh Rainforest, Olympic National Park, Washington (© ARCO/P Frischknecht/age fotostock)(Bing Australia)

Geometer moth larvae, aka an inchworm (© Joe Petersburger/Getty Images)(Bing Australia)

Hikers near Hverfjall, Iceland (© Joseph Calev)(Bing Australia)

Anzac Day at Currumbin, Queensland in 2014 (© Chris Hyde/Getty Images)(Bing Australia)

Southern white rhinoceros mother and calf (© Theo Allofs/Masterfile)(Bing Australia)

Kelp goose on Cole-Cole Beach, Chiloé National Park, Chiloé Island, Chile (© SIME/eStock Photo)(Bing Australia)

Devetàshka cave near Lovech, Bulgaria (© Marholev/E+/Getty Images)(Bing Australia)

Crystal Shower Falls, Dorrigo National Park, New South Wales, Australia (© Jochen Schlenker/Masterfile)(Bing Australia)

North American porcupine (© Minden Pictures/SuperStock)(Bing Australia)

Tulip fields in Noordoostpolder, Netherlands (© Siebe Swart/plainpicture)(Bing Australia)