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Above view of Algae in river Corrib, Wild Atlantic Way, Galway, Ireland.

Old dead tree stump with scrawny branched roots and branches in clear Tyrolean mountain lake partially submerged water surface with reflection of sky as concept for transience and decay

The water stream by Geysir in Iceland with clear blue colour

Geyser runoffs at Norris Geyser Basin, Yellowstone National Park, Wyoming, USA

Colorful hot springs, rich with minerals, bubble in Karlovy Vary

View of Lake Valparola in the spring in dirty snow, Falzarego,Dolomites, European Alps, Italy,no logos,Nikon D850

Thermophilic Microbial Mat at Norris Geyser Basin in Yellowstone National Park, Wyoming. These olive-green mats are the result of cyanobacteria mixed with iron.

A closeup shot of a stump surrounded by algae in a lake in Pinetop, Arizona

Natural scene from Ohio state park

Close up of thermophilic algae found in hot springs with extreme environmental conditions of temperature greater than 50 degrees Celsius, light, pH and nutrient composition.

Seaweed floating in the water with a rock sticking up. Close up nature shot from above close to shore.

A grassy riverbed under fast flowing water and rock algae.

Colorful Bacteria mats of thermophilic microorganisms in the runoff of hot springs, Yellowstone National Park, Wyoming

Norris Geyser Basin, Yellowstone National Park.

Macro shot of bright cyan-colored crystals contrasting with a dark rocky terrain.

Aerial view of frozen sea along Seattle coast

Close-up view of bacteria mat in the water of Yumoto onsen, Yunodaira marsh, Japan

The gold-colored runoff at the Upper Geyser Basin in Yellowstone National Park is typically caused by thermophiles, heat-loving microorganisms that thrive in the hot, mineral-rich waters of the geothermal features. These microorganisms, particularly certain types of bacteria and archaea, produce pigments that give the runoff its striking colors. The gold or yellow color is often attributed to thermophilic bacteria like Thermocrinis or other species that can process sulfur or iron, creating vibrant hues in the runoff channels. These colorful runoffs are a hallmark of the park's geothermal activity.

Public recreation park. Crowded place. Netherlands. Roots of a tree trunk in the shallow waters of a lake.

Taupo, New Zealand.

Branches sticking up from the mud in a hot spring

West Thumb Geyser Basin in Yellowstone National Park

The Rio Tinto in Huelva, Spain, exhibits striking red and orange iron-rich deposits and green microorganism traces

Scenery at Biscuit Basin Geyser in Yellowstone National Park, Wyoming, USA

Nature of colors stock photo

Salt encrusted stick in salt lake

chloroflexus aurantiacus, photosynthetic bacterium isolated from hot springs.

Sea water on the coast of Guinea Bissau

Abstract pattern of alga in dirty water

green ocean plumage underwater

Free Images: "bestof:Different colored algae and dead tree stump in geyser runoff water.jpg en <br/> Image title Different colored algae and dead tree stump in geyser runoff water"

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