Rabelo boats near the Dom Luis I Bridge (Luis I Bridge) over the Douro River, UNESCO World Heritage Site, Porto, Norte, Portugal, Europe

Aerial of a dugout canoe on the Congo River, Mbandaka, Equateur province, Democratic Republic of Congo, Africa

Aerial of a dugout canoe on the Congo River, Mbandaka, Equateur province, Democratic Republic of Congo, Africa

A view of the Mitchell River meandering towards Swift Bay as seen from a commercial helicopter, Kimberley, Western Australia, Australia, Pacific

Mahaweli River, Uva province, Sri Lanka, Indian subcontinent, South Asia

Spotted sandpiper (Actitis macularius) non-breeding plumage, common shorebird in the Americas, Nosara River, Nosara, Guanacaste, Costa Rica

Hippopotamuses (Hippopotamus amphibius) in the river Khwai, Okavango Delta, Botswana, Africa

Sangha river, Dzanga Sangha National Park, UNESCO, Central African Republic

River rapids at the Miabi water reservoir, Mbuji Mayi, Eastern Kasai, Democratic Republic of Congo, Africa

Aerial of the Congo River, Mbandaka, Equateur province, Democratic Republic of Congo, Africa

Aerial view of the Santa Cruz River around El Calafate, Patagonia, Argentina, South America

Riverboats on the Congo river, Mbandaka, Equateur province, Democratic Republic of Congo, Africa

River boat on the Congo river, Mbandaka, Equateur province, Democratic Republic of Congo, Africa

Mugger crocodile (Crocodylus palustris) by the Senanayake Samudraya Lake, Gal Oya National Park, Sri Lanka, Indian subcontinent, South Asia

Australasian darter bird (Anhinga novaehollandiae) drying wings, snake bird spreading wings, Poovar Island, Kerala, India, Asia

View at houses and church of riverine town of Lorch, Rheingau, Hesse, Germany, Europe

Drone shot, river course, low cloud cover

Conflict between livestock and wildlife, herd of goats and desert elephants in the riverbed of the Ugab River, Brandberg, Namibia

Conflict between livestock and wildlife, herd of goats and desert elephants in the riverbed of the Ugab River, Brandberg, Namibia

Conflict between livestock and wildlife, herd of goats and desert elephants in the riverbed of the Ugab River, Brandberg, Namibia

Expansive aerial view over river landscape with waterfalls and dense forest, The Iguazu Falls between Argentina and Brazil

African elephant (Loxodonta africana), young animal, sniffing, trunk, dried up riverbed, Kruger, Kruger National Park, South Africa

Arizona Horseshoe Bend meander of Colorado River in Glen Canyon

Starling (Sturnus vulgaris), also known as Common starling, with food for the young birds, insects, with blackberry moth (Macrothylacia rubi) as food for the young, moth, foraging, brood, brood cavity, tree cavity, nesting site, Middle Elbe River Landscape, Middle Elbe Biosphere Reserve, Saxony-Anhalt, Germany, Europe

Starling (Sturnus vulgaris), also known as the Common starling, with food for the young birds, insects, grasshoppers and grasshoppers as food for the young, foraging, breeding, breeding cavity, tree cavity, nesting site, Middle Elbe River Landscape, Middle Elbe Biosphere Reserve, Saxony-Anhalt, Germany, Europe

Kingfisher (Alcedo atthis) Indicator of clean watercourses, male and female at sunrise, perched on branch, courtship, mating, pair formation, habitat, Flying Gem, Middle Elbe River Landscape, Middle Elbe Biosphere Reserve, Saxony-Anhalt, Germany, Europe

Cultivated almond trees (Prunus dulcis) and streams with riverine vegetation in the Campiña Cordobesa, the fertile rural area south of the town of Córdoba. Aerial view. Drone shot. Córdoba province, Andalusia, Spain, Europe

Riverscape, footbridge to a small island in the Saint Lawrence River, Province of Quebec, Canada