Green sea turtle (Chelonia mydas) tracks left from a female laying eggs the previous night on Long Beach on Ascension Island, South Atlantic Ocean

Yilki horse running in dust at sunset, Hacilar, Kayseri, Cappadocia, Anatolia, Turkey, Asia Minor, Asia

View of the Khafre Pyramid of Giza on a sunny day, Giza, Cairo, Egypt, Africa

View of the Khafre Pyramid of Giza and a man on horseback on a sunny day, Giza, Cairo, Egypt, Africa

Street in Al Mintarib, village on the edge of The Sharqiya Sands, formerly Wahiba Sands, desert region, Sultanate of Oman, Arabian Peninsula

Al-Hamra village, Akhdar Jebel, Sultanate of Oman, Arabian Peninsula

Man squatting beside extraordinary sandstone rock structure called Dancing Rocks, Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

Man standing on a dune in Wahiba Sands (Sharqiya Sands), region of desert in the Sultanate of Oman

Magellanic penguin (Spheniscus magellanicus) at a breeding and molting site in Estancia San Lorenzo, Argentina

Magellanic penguin (Spheniscus magellanicus) at a breeding and molting site in Estancia San Lorenzo, Argentina

Stones, bark and leaves in dirt at King's Canyon, Northern Territory, Australia

All-terrain vehicles driving on a sandy road under blue sky, Wahiba Sands, Oman, Asia

Jeep-Safari in the dunes, Saddle Hill, Diamond area, Namibia

Safari, Hartmannstal, Kaokoveld, Namibia

Jeeps in the dunes at Conception Bay, Diamond Area, Namibia

Jeeps in the dunes near Sylvia Hill, Diamond Area, Namibia