Icebergs, Lake Gray, Torres del Paine National Park, Patagonia, Chile, South America

Mirador Sicasumbre mountain top viewpoint, Pajara, Fuerteventura, Canary Islands, Spain, Atlantic, Europe

Scenic view of an old arched bridge over a tranquil River Nidd with surrounding greenery and houses in a quaint village in Knaresborough, North Yorkshire, England, United Kingdom, Europe

California gray whale calf (Eschritius robustus), half above half below, San Ignacio Lagoon, Baja California Sur, Mexico, North America

Ancient stone kiln in a rural field with a dry stone wall and overcast sky, North Yorkshire, England, United Kingdom, Europe

Waterside old warehouse, wooden buildings in harbour area, Tromso, Norway, Scandinavia, Europe

Loopline rail bridge (Liffey Viaduct) built 1891 and designed by John Chaloner Smith, spanning river from Pearse railway station, Dublin, Republic of Ireland, Europe

Desalinisation plant at the solar energy scientific research centre, Tabernas, Almeria, Andalusia, Spain, Europe

Pink-backed pelican (Pelecanus rufescens), Chobe River, Botswana, Africa

Gray Heron (Grey Heron) (Ardea cinerea), Kruger National Park, South Africa, Africa

Stone pathway leading through ancient wall ruins under a cloudy sky, with a scenic view in the distance, North Yorkshire, England, United Kingdom, Europe

Purple roller (Coracias naevius), Masai Mara, Kenya, East Africa, Africa

Historic Iglesia de la Santisima Trinidad (Church of the Holy Trinity), Tepoztlan, State of Morelos, Mexico, North America

Shops in town centre of Buckfastleigh, south Devon, England, United Kingdom, Europe

Iguana sculpture, Punta Sur, Isla Mujeres, Caribbean Coast, Cancun, Quintana Roo, Mexico, North America

Coconut palm tree growing on rocky shoreline, Isla Mujeres, Caribbean Coast, Cancun, Quintana Roo, Mexico, North America

Modern architecture of interpretation centre museum, El Castro San Cibrao de Las, Ourense province, Galicia, Spain, Europe

Adult California gray whale (Eschritius robustus) flukes-up dive in San Ignacio Lagoon, Baja California Sur, Mexico, North America

Yellow-legged gull (Larus Michahellis), Atlantic Islands Galicia Maritime Terrestrial National Park, Galicia, Spain, Europe

California gray whale (Eschrichtius robustus) calf underwater with whale watchers in San Ignacio Lagoon, Baja California Sur, Mexico, North America

Clark's nutcracker (Nucifraga columbiana), Manning Provincial Park, British Columbia, Canada, North America

Mt Ngauruhoe, 2291m, youngest of the three volcanoes in the Tongariro National Park, North Island, New Zealand

Lake Gray Glacier melting in a stream of blue water, Torres del Paine National Park, Patagonia, Chile, South America

Tatev monastery standing on the edge of a deep gorge of the Vorotan River, Syunik Province in southeastern Armenia, Eurasia

Cairns, Pointe aux Epinettes, Bic National Park, Quebec province, Canada, North America

Canal du Midi near Carcassonne, UNESCO World Heritage Site, Aude, Occitania, France, Europe

Adult California gray whales (Eschrictius robustus), spy-hopping in San Ignacio Lagoon, Baja California, Mexico, North America

California gray whale calf (Eschrictius robustus), surfacing in San Ignacio Lagoon, Baja California, Mexico, North America

California gray whale calf (Eschrictius robustus), surfacing in San Ignacio Lagoon, Baja California, Mexico, North America

California gray whale calf (Eschrictius robustus), with excited tourists in San Ignacio Lagoon, Baja California, Mexico, North America

Suleymaniye Camii Mosque main gate, UNESCO World Heritage Site, Istanbul, Turkey, Europe

Aerial drone view of particular ice textures formed in the Hoffelsjokull glacier following global warming, Iceland, Polar Regions

Icebergs with dark skies, Antarctica, Polar Regions

Aerial of an old watchtower in the Herault gorge, UNESCO World Heritage Site, Causses and Cevennes, Herault, Occitanie, France, Europe

Blue Gray Tanager (Thraupis Episcopus), Boca Tapada, Alajuela Province, Costa Rica, Central America

Porous sand stone rocks on Jalandhar Beach near the south pole point in Diu, India, Asia

The intertidal zone of the Quantock Coast, West Somerset, contains an abundance of geology and wildlife. It is a Site of Special Scientific Interest (SSSI) and is of international geological importance.

The intertidal zone of the Quantock Coast, West Somerset, contains an abundance of geology and wildlife. It is a Site of Special Scientific Interest (SSSI) and is of international geological importance.

Breathtaking views of forest and snowy mountain slopes, Lower Langtang Valley trek, Himalayas, Nepal, Asia

View of sculpture and Piazza del Plebiscito, historic centre, UNESCO World Heritage Site, Naples, Campania, Italy, Europe

Exterior of airship at DOX art hub, Holesovice, Prague, Bohemia, Czech Republic (Czechia), Europe

Guadalupe fur seals (Arctocephalus townsendi), at new haul out on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America

Church of the Nossa Senhora da Saude, Island of Mozambique, UNESCO World Heritage Site, Mozambique, Africa

Aerial of the Roman Amphitheatre, UNESCO World Heritage Site, Orange, Vaucluse, Provence-Alpes-Cote d'Azur, France, Europe

Aerial of the Cite de Carcassonne citadel, UNESCO World Heritage Site, Carcassonne, Aude, Occitania, France, Europe

Cite de Carcassonne citadel, UNESCO World Heritage Site, Carcassonne, Aude, Occitania, France, Europe

A low-angle view of a large, beige building with a dark gray roof and many windows. The building is set against a blue sky with white clouds in Manchester, UK.

Natural volcanic rock swimming pools at sunset, Porto Moniz, Madeira, Portugal, Atlantic, Europe

A long-beaked common dolphin (Delphinus capensis), surfacing off Gorda Banks, Baja California Sur, Mexico, North America

California gray whale calf (Eschrictius robustus), with excited tourists in San Ignacio Lagoon, Baja California, Mexico, North America

Neuschwanstein Castle, Southern Bavaria. This 19th-century historicist palace is built on a rugged hill of the foothills of the Alps in the very south of Germany and is a UNESCO World Heritage site.

The intertidal zone of the Quantock Coast, West Somerset, contains an abundance of geology and wildlife. It is a Site of Special Scientific Interest (SSSI) and is of international geological importance.

Aerial of Sorrento, Bay of Naples, Campania, Italy, Europe

White-backed vultures (Gyps africanus) and a Black-backed jackal (Canis mesomelas) feed on an African elephant (Loxodonta africana), Savuti, Chobe National Park, Botswana, Africa

Adult fin whale (Balaenoptera physalus), dorsal fin detail surfacing off Newport Beach, California, United States of America, North America

Ottoman Bridge and Hot Springs at the Langarice Canyon, Vjosa (Vjose) River, Albania, Europe

Gray clay flats below Anvil Hill west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America

Antiguan Anole Lizard (Anolis Leachii), with dewlap extended, Bermuda, North Atlantic, North America

Circumnavigation monument, Shoreline of Punta Arenas, Patagonia, Chile, South America

Aerial of the Andes mountains, Chile, South America

Sewell Mining Town, UNESCO World Heritage Site, Chile, South America

Sewell Mining Town, UNESCO World Heritage Site, Chile, South America

Adult brown pelican (Pelecanus occidentalis), taking flight on a small islet near Isla Salsipuedes, Baja California, Mexico, North America

Two fishermen on boat preparing for fish harvest, Rozmberk Pond, UNESCO Biosphere, Trebon, Jindrichuv Hradec District, South Bohemian Region, Czech Republic (Czechia), Europe

Museum in the Chauvet-Pont-d'Arc Cave, UNESCO World Heritage Site, Ardeche, Auvergne-Rhone-Alpes, France, Europe

Two modern, multi-story buildings with curved facades and numerous windows and balconies. One building is predominantly gray, the other features glass-fronted balconies. The sky is a clear blue in London, UK.

Historic tower of Porto Paglia in the sea on the coast of Sardinia, Italy, Mediterranean, Europe

Sandstone that has been eroded into forms that resemble clam shells on the south end of Petrified Forest National Park, Arizona, United States of America, North America

Adult California gray whale (Eschrictius robustus), surfacing near boat in San Ignacio Lagoon, Baja California, Mexico, North America

Southwark Bridge as seen from the South Bank, London, England, United Kingdom, Europe

Blue-footed boobies (Sula nebouxii), on a small islet near Isla Salsipuedes, Baja California, Sea of Cortez, Mexico, North America

Aguila glacier, Tierra del Fuego, Chile, South America

Inner cloister of Shehzade (Sehzade) Camii Mosque, Istanbul, Turkey, Europe

Farmers market on Vltava riverside close to Palackeho namesti and Vysehrad church in background, Prague, Czech Republic (Czechia), Europe

Vltava River flowing by Shooter's Island (Strelecky ostrov), Prague, Bohemia, Czech Republic (Czechia), Europe

Aerial of the Andes mountains, Chile, South America

Berliner Schloss Palace, Berlin, Germany, Europe

Bathing in the Vjosa (Vjose) River, Langarice Canyon, Albania, Europe

A small hill of gray bentonite clay that appears to be melting into the purple bentonite of Hamilili Valley on the south end of Petrified Forest National Park, Arizona, United States of America, North America

Aerial drone view of particular ice textures formed in the Svinafellsjokull glacier following global warming, Iceland, Polar Regions

Aguila glacier, Tierra del Fuego, Chile, South America

Tserko Ri and Gangchempo towers over a rustic house in the Himalayas, Langtang Valley trek, Himalayas, Nepal, Asia

Museum of Islamic Art, Doha, Qatar, Middle East

Adult California gray whale (Eschrictius robustus), spy-hopping in San Ignacio Lagoon, Baja California, Mexico, North America

California gray whale (Eschrictius robustus), spy-hopping near boat in San Ignacio Lagoon, Baja California, Mexico, North America

A pair of long-beaked common dolphins (Delphinus capensis), surfacing off Gorda Banks, Baja California Sur, Mexico, North America

Adult California gray whale (Eschrictius robustus), near boat in San Ignacio Lagoon, Baja California, Mexico, North America

Adult brown pelicans (Pelecanus occidentalis), on a small islet near Isla Salsipuedes, Baja California, Mexico, North America

Autumnal forests with deep blue Katsura River in Arashiyama of Kyoto, Honshu, Japan, Asia

Adult California gray whale (Eschrictius robustus), near boats in San Ignacio Lagoon, Baja California, Mexico, North America

California gray whale calf (Eschrictius robustus), with excited tourists in San Ignacio Lagoon, Baja California, Mexico, North America

California gray whale calf (Eschrictius robustus), beside boat being touched by tourists in San Ignacio Lagoon, Baja California, Mexico, North America

A small hill of gray bentonite clay that appears to be melting into the purple bentonite of Hamilili Valley on the south end of Petrified Forest National Park, Arizona, United States of America, North America

Heart painted on roof of traditional trullo in Alberobello, UNESCO World Heritage Site, Puglia, Italy, Europe

La Coupée, the causeway which joins big and little Sark, Sark, Channel Islands

Sunny day on a bustling city street with pedestrians and cyclists, classic architecture, and clear blue sky, Paris, France, Europe

California gray whale calf (Eschrichtius robustus), underwater with tourists in San Ignacio Lagoon, Baja California Sur, Mexico, North America

Landscape view, twilight glow and mountain ridges of High Country from Mount Feathertop, Alpine National Park, High Country, Victoria, Australia, Pacific

California gray whale calf (Eschrichtius robustus), underwater with tourists in San Ignacio Lagoon, Baja California Sur, Mexico, North America

California gray whale calf (Eschrichtius robustus), underwater with tourists in San Ignacio Lagoon, Baja California Sur, Mexico, North America