A scenic view of a historic stone bridge over a river, surrounded by lush greenery and quaint houses under a partly cloudy sky.

Sunset view under a pier with sunburst effect, reflecting on wet sand and calm water, Prince of Wales Bridge, the Second Severn Crossing, M4 motorway over the River Severn, between England and Wales, United Kingdom, Europe

Cifton Suspension Bridge over a scenic gorge with a river, under a clear blue sky in Bristol, England, United Kingdom, Europe

Scenic view of a historic bridge over a river with classical buildings in the background under a clear blue sky, Paris, France, Europe

Aerial view over dense rooftops of Kathmandu with colorful buildings and typical urban sprawl under a hazy sky

View of Rio-Niteroi bridge over Guanabara Bay under fog, Rio de Janeiro, Brazil, South America

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Palms and old pier in Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

View over houses at sailing boats in a bay under blue sky, Admiralty Bay, Port Elizabeth, Bequia, St. Vincent, Grenadines, Caribbean, America

View over cable car at high rise buildings on the waterfront under clouded sky, Wellington, North Island, New Zealand

View over vineyards to the alps under blue sky, Piedmont, Italy, Europe

View over the Old Town and the harbour under blue sky, Korcula island, Croatian Adriatic Sea, Dalmatia, Croatia, Europe

View over vineyards to the alps under blue sky, Piedmont, Italy, Europe

The euro currency under a magnifying glass

Distant telephoto landscape view over ocean water through Golden Gate Bridge to San Francisco Cityscape under a beautiful sunny, blue sky. Copy space

Palacio de Aljaferia palace illuminated at night under floodlights, flags flying over external wall and towers, Moorish architecture, Zaragoza, Saragossa, Aragon, Spain

Palacio de Aljaferia palace illuminated at night under floodlights, flags flying over external wall and towers, Moorish architecture, Zaragoza, Saragossa, Aragon, Spain

View over Senja's fjords and mountain peaks under the midnight sun, Mount Grytetippen, Senja, Norway, Europe

View over Senja's fjords and mountain peaks under the midnight sun, Mount Grytetippen, Senja, Norway, Europe

Water-level view of the new I64 bridge under construction over the Kanawha River in downtown Charleston, WV.

Eye-level view of the new I64 bridge under construction over the Kanawha River in downtown Charleston, WV.

Panoramic view of over water villas under the moonlight at Gili Lankanfushi, in the Maldives

Woman snorkeling in tropical ocean water, Over/under view.

Hawaii, Maui, Woman stand up paddling in ocean just off Canoe Beach, Over/under view.

Woman snorkeling in tropical ocean water, Beach in distance, Over/under view.

Micronesia, Pohnpei, Over/under view of hard coral reef and Ant Atoll.

Indonesia, Komodo Dragon National Park, Split view of komodo dragon in shallow water.

Hawaii, Maui, Woman stand up paddling in ocean just off Canoe Beach, Over/under view.

Caribbean, Grand Cayman Island, Over/under view of stingrays swimming in clear blue water, blue sky above.

Loggerhead sea turtle (Caretta caretta).Tenerife, Canary Islands.

Polar Bear swimming, Hudson Bay Canada

Banded sea krait on surface, Amédée islet New Caledonia

Damselfly on Yellow water lily flower, River Lez France

Damselfly on Yellow water lily flower, River Lez France

White-tip reef shark over shallow coral reef, Fiji Islands

Longfin eel under surface, New Zealand

Underwater cave from Misool, Raja Ampat, Indon?sie

Whale shark (Rhincodon typus) under the surface, Nosy Be, Madagascar

Tara Oceans Expeditions - May 2011. Tara with deployed plancton nets. On "station", the boat is drifting without engine or sails. Tara Oceans, a unique expedition: Tara Oceans is the very first attempt to make a global study of marine plankton, a form of sea life that includes organisms as small as viruses and bacterias, and as big as medusas. Our goal is to better understand planktonic ecosystems by exploring the countless species, learning about interactions among them and with their environment. Marine plankton is the only ecosystem that is almost continuous over the surface of the Earth. Studying plankton is like taking the pulse of our planet. Recently, scientists have discovered the great importance of plankton for the climate: populations of plankton are affected very rapidly by variations in climate. But in turn they can influence the climate by modifying the absorption of carbon. In a context of rapid physico-chemical changes, for example the acidification observed today in the world's oceans, it is urgent to understand and predict the evolution of these particular ecosystems. Finally, plankton is an astonishing way of going back in time ? a prime source of fossils. Over the eons, plankton has created several hundred meters of sediment on the ocean floors. This allows us to go back in time, to the first oceans on Earth, and better understand the history of our biosphere. More than 12 fields of research are involved in the project, which will bring together an international team of oceanographers, ecologists, biologists, geneticists, and physicists from prestigious laboratories headed by Eric Karsenti of the European Molecular Biology Laboratory. Galapagos

Tara Oceans Expeditions - May 2011. CTD-Rosette (Conductivity Temperature Density instrumental platform with 7 additional sensors)

Tara Pacific expedition - november 2017 Saltwater crocodile (Crocodylus porosus) diving down near Garua Island, Kimbe Bay, Papua New Guinea

Split image of scuba divers before to dive under the ice, only in springtime, when the hard winter slowly subsides, are the ice-cold waters suitable for divers who can dive around a iceberg that floats in crystal-clear water, Tasiilaq, East Greenland

Spit image of a scuba diver diving close to an iceberg, only in springtime, when the hard winter slowly subsides, are the ice-cold waters suitable for divers who can dive around a iceberg that floats in crystal-clear water, Tasiilaq, East Greenland

School of fish under the surface at dusk, island Procida, La Corricella, Tyrrhenian Sea, Campania Italy

Common Cuttlefish (Sepia officinalis) under the surface at dusk, Miseno, Napoli, Italy, Tyrrhenian Sea

Common Cuttlefish (Sepia officinalis) spitting ink under the surface at dusk, Miseno, Napoli, Italy, Tyrrhenian Sea

Split image of guide with snowmobile waiting the divers, only in springtime, when the hard winter slowly subsides, are the ice-cold waters suitable for divers who can dive around a iceberg that floats in crystal-clear water, Tasiilaq, East Greenland

Split level panorama to Raja Ampat, Indonesia

Corals on a reef in the S-shaped channel during a high low tide, Mayotte

Mid-air-mid-water view of the Burles spring, karstic exsurgence of Vauclusian type, on the commune of sainte-Enimie, Lozere, Occitania, France.

Coral reef in the lagoon in Mayotte. A week end in Mayotte, along the S pass to admire the reef and the magnificent corals that compose it.

Close up underwater portrait of a jacare caiman, Caiman yacare, in the Rio Claro. Rio Claro, Pantanal, Mato Grosso, Brazil

Close up underwater portrait of a jacare caiman, Caiman yacare, in the Rio Claro. Rio Claro, Pantanal, Mato Grosso, Brazil

The Portuguese man o' war (Physalia physalis), also known as the man-of-war, a marine hydrozoan floating on the surface. Azores, Portugal, Atlantic Ocean.

Eyestripe surgeonfish (Acanthurus dussumieri) in the clear, turquoise waters of Mayotte's lagoon in front of the maji island.

Eyestripe surgeonfish (Acanthurus dussumieri) couple in the clear, turquoise waters of Mayotte's lagoon.

Indian Ocean bottlenose dolphin (Tursiops aduncus) in Mayotte lagoon.

Quinnock salmon spawning in a mountain river, New Zealand

Mauve stinger jellyfish (Pelagia noctiluca), Aragonese Castle, Ischia Island, Tyrrhenian Sea, Mediterranean Sea

Loggerhead sea turtle (Caretta caretta) and jellyfishes in floating wastes, Procida Island, Tyrrhenian Sea, Mediterranean Sea

Green turtle (Chelonia mydas) at blue hour on N'gouja beach, Mayotte

Diver and Boat above reef, Bunaken NP Indonesia

Whale shark (Rhincodon typus) in the waters of Nosy Be, Madagascar

Tiger shark (Galeocerdo cuvier) eating a whale carcass drifting off Mayotte

Female snorkeler above the reef at sunset, S Pass, Mayotte

Plage de l'Hermitage, L'Hermitage les Bains, Reunion Island, France

Split Level on North reef. Mayotte

Sea turtle at the surface of the water, Gulf of California

Whale Shark at the surface with a yacht, Gulf of California