Caverna Devetashka, Devetaki, Bulgária (© Jasmine_K/Shutterstock)

Farol de Sassnitz, Rügen, Mecklenburg-Pomerânia Ocidental (© Christian Back/eStock)

Marmota espreitando para fora de sua toca (© Scacciamosche/Getty Images)

Grande Canal com a Basílica de Santa Maria della Salute, Veneza, Itália (© RudyBalasko/Getty Images)

Borboletas-monarca, Goleta, Califórnia, EUA (© Craig Rademacher/500px/Getty Images)

Bonsai Rock, Lago Tahoe, EUA (© Jim Patterson/Tandem Stills + Motion)

Figuras feitas pelos indígenas locais de Manaus, Brasil (© rchphoto/Getty Images)

Monte Hood, Oregon, EUA (© Inigo Cia/Getty Images)

Praia de Copacabana, Rio de Janeiro, Brasil (© Anton Petrus/Getty Images)

Chinese New Year, Luzhou, China (© Liu Guoxing/VCG via Getty Images)

Chora, Folegandros Island, Cyclades, Greece (© Francesco Riccardo Iacomino/Getty Images)

Volcán Alcedo giant tortoises, Isabela Island, Galápagos, Ecuador (© Tui De Roy/Minden Pictures)

Pegadung Rock, Lampung, Sumatra, Indonesia (© CK NG/500px/Getty Images)

Red-crowned crane bowing to his mate in Hokkaido, Japan (© Steve Bloom Images/Alamy)

Hippopotamus mother and calf, South Luangwa National Park, Zambia (© Nature Picture Library/Alamy)

Female pyrrhuloxia perched on cactus plant, Texas (© outtakes/Getty Images)

Lago Di Braies nas Dolomitas, Tirol do Sul, Itália (© Marco Bottigelli/Getty Images)

Sperm whale pod surfacing, Dominica (© Franco Banfi/Minden Pictures)

Aerial view of colourful houses on a headland in Puerto de la Cruz, Tenerife, Spain (© Marco Bottigelli/Getty Images)

Kinder Scout at sunrise, Peak District National Park, England (© john finney photography/Getty Images)

Firefall at Horsetail Fall, Yosemite National Park, California (© Gregory B Cuvelier/Shutterstock)

Cataratas do Iguaçu, Paraná (© Nido Huebl/Shutterstock)

Monastério de Haghartsin, Parque Nacional de Dilijan, Armênia (© Alexey Kharitonov/Shutterstock)

Amendoeiras em plena floração, Califórnia, EUA (© Jeffrey Lewis/Tandem Stills + Motion)

Névoa no Vale Cowichan a partir do Monte Prevost, Duncan, Ilha de Vancouver, Colúmbia Britânica, Canadá (© Kevin Oke/Alamy)

Parque Nacional do Grand Canyon, Arizona, EUA (© Jeremy Janus/Getty Images)

Filhotes de ursos polares brincando, Kaktovik, Alasca, EUA (© Piriya Photography/Getty Images)

Castelo de Bamburgo, Northumberland, Inglaterra (© Blackbeck/Getty Images)

Filhotes de coruja-buraqueira recém-nascidos, Pantanal (© Bence Mate/Minden)