Male bearded reedling, Norfolk, England (© Andrew Sproule/Shutterstock)

The blue, glacier-fed waters of the Kasilof River, Alaska, USA (© jared lloyd/Getty Images)

Sattais Katcheri Hall in Amber Fort near Jaipur, Rajasthan, India (© R.M. Nunes/Getty Images)

Decorator crab on a sea pen, Komodo National Park, Indonesia (© Alex Mustard/Nature Picture Library)

Cedar Mesa and Muley Point near Bears Ears National Monument, Utah, USA (© Jeff Clay/Tandem Stills + Motion)

Chinese lanterns for Mid-Autumn Festival celebration (© LeeYiuTung/Getty Images)

Aerial view of black lava beach, El Golfo, Lanzarote, Canary Islands, Spain (© Westend61/Adobe Stock)

Hobbit house at Hobbiton Movie Set, Matamata, New Zealand (© djr-photography/Shutterstock)

Fall aspen trees near Guardsman Pass, Utah, USA (© Danita Delimont/Shutterstock)

Sea otter grooming fur, Monterey Bay, California (© Suzi Eszterhas/Minden Pictures)

Eiffel Tower at sunset, Paris, France (© Alexander Spatari/Getty Images)

Alphorn players, Bavaria, Germany (© U. J. Alexander/Shutterstock)

Winnats Pass, Peak District National Park, England (© Daniel_Kay/Getty Images)

Sorine windmill and vineyards, Santenay wine region, Côte de Beaune, Burgundy, France (© Marco Bottigelli/Getty Images)

Polar bear cubs playing in Svalbard, Norway (© Danny Green/Nature Picture Library)

Fort Union National Monument, New Mexico (© zrfphoto/Getty Images)

Field of kochia plants, China (© lingqi xie/Getty Images)

Cadini di Misurina, Dolomites, Veneto, Italy (© Vithun Khamsong/Getty Images)

California sea lions hunting a sardine bait ball, offshore Mexico, Pacific Ocean (© Henley Spiers/Nature Picture Library)

The Flight 93 National Memorial Visitor Center near Shanksville, Pennsylvania (© Maurice Savage/Alamy)

Aerial view of Olvera, Andalusia, Spain (© Marco Bottigelli/Getty Images)

Gabit Keni Beach near Ankola, Karnataka, India (© Amith Nag Photography/Getty Images)

Beech tree in a cereal field, East Meon, South Downs National Park, Hampshire, England (© Guy Edwardes/Minden Pictures)

'Industries of California' mural by Ralph Stackpole at Coit Tower, San Francisco, California (© David R. Frazier Photolibrary, Inc./Alamy)

Lake Fyans, Grampians National Park, Victoria, Australia (© tracielouise/Getty Images)

Green-crowned brilliant hummingbirds feeding on lobster-claw flowers, Costa Rica (© Paul Hobson/Nature Picture Library)

Westerheversand Lighthouse in Westerhever, Schleswig-Holstein, Germany (© bluejayphoto/Getty Images)

Coyote Buttes, Vermilion Cliffs National Monument, Arizona (© James Hager/Getty Images)

Traditional beach huts, Southwold, Suffolk Heritage Coast, England (© stevendocwra/Getty Images)

Horsehair parachute fungus, Belarus (© Máté/Nature Picture Library)