Most lakes are grayish-blue or grayish-green, but some stun with wild colors. Lakes like Lake Hillier, Lake Pukaki, Lake Retba, Laguna Colorada, and Blood Falls can appear pink, red, neon green, cyan blue, or even rainbow-colored. Bacteria, sulfur, or algae often cause these colors. While some of these lakes are safe for swimming, others are too dangerous to approach. All, however, are visually stunning.
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Location: Arusha Region, Tanzania
Why It's Unusual: Lake Natron's brilliant red color might seem enticing, but this water is one of the most dangerous on Earth. As a salt lake, water enters it but never leaves. Evaporation lets salt and minerals build up. Some salt lakes, like the Dead Sea, allow swimming, but Lake Natron does not. Its high natron mineral content makes it highly alkaline, with a pH of 10.5, similar to ammonia. The lake also reaches 140 degrees Fahrenheit.bacteriaThese bacteria thrive in this harsh environment. cyanobacteria, produce a pink pigment that gives the lake its strange color.
Few things live in the lake besides Alcolapia latilabris fish, algae, and a colony of flamingos that eat the algae. The lake's bright surface causes birds and other animals to accidentally enter, turning them into stone statues. When the water goes down, these stone animals wash onto the shore.
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Location: Jiuzhaigou National Park, China
Why It's Unusual: Nestled in the Tibetan Plateau valley, Jiuzhaigou National Park is a UNESCO World Heritage Site. Among the park's best natural sights is Five Flower Lake. The lake has two unique traits: it changes color and does not freeze in winter. At any moment, the water looks amber yellow, emerald green, dark jade, or light turquoise. Coral might also line the edges. This happens because of the lime, calcium carbonate, and colored plants inside the lake.
The lake stays unfrozen because a hot spring runs beneath it. Locals often believe the lake is holy, despite the scientific reason.
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Location: Yellowstone National Park, Wyoming
Why It's Unusual: The Grand Prismatic SpringThis spring is an incredible sight at Yellowstone National Park. It is not a lake; it is a geyser, 121 feet deep with a 370-foot diameter. A drone that illegally flew into it vanished.
Its water glows brilliant blue, banded with orange, yellow, and green. Thermophilic bacteria in the water's different temperatures create these layers. Blue light scatters in the middle.
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Location: Goldfields-Esperance, Western Australia
Why It's Unusual: Lake Hillier has a striking pink color that contrasts sharply with the Pacific Ocean nearby. People first found it in 1802, but the reason for its pink color remains unclear.
Scientists studying the lake think the Dunaliella salina algae cause the color; this algae makes carotenoids, a pigment found in carrots. Some suggest the color comes from salt crust bacteria or a reaction between salt and sodium bicarbonate in the lake.
The lake has very high salt content, yet people can swim in it safely.
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Location: Mackenzie Basin, New Zealand.
Why Unusual: Lake Pukaki is one of New Zealand's most beautiful lakes; it was used as a setting for Lake Town in the live-action film ‘The Hobbit’.Setting.for Lake Town in the live-action film ‘The Hobbit’The Hobbit.A receding glacier formed the lake when it blocked an associated valley. The melting glacier deposits glacial flour, finely ground rock from the glacier, into the lake, giving it a distinct cyan color.
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Location: Flores Island, Indonesia.
Why Unusual: Kelimutu Volcano has three summit craters, each containing its own lake.Lake.Each lake has a different color: Tiwu Ata Mbupu (Lake of Old People) is blue, Tiwu Nuwa Muri Koo Fai (Lake of Young Men and Maidens) is green, and Tiwu Ata Polo (Bewitched or Enchanted Lake) is red. Colors shift periodically due to chemical reactions between lake minerals and volcanic gas. No extensive research explains the color changes.
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Location: McMurdo Dry Valleys, Antarctica.
Why Unusual: Blood Falls., which pours from the Taylor Glacier, sounds foreboding. The five-story waterfalls look like gushing blood. This Antarctic lake did not see a gruesome massacre; how did it get that stark, spooky look?
Scientists first thought algae caused the red color. Later research showed a different cause. Two million years ago, the glacier trapped water under the surface. Microbes formed in that water, evolving in a closed system without outside influence. These microbes lack light and free oxygen, living in frigid, high-saline conditions. Iron, abundant in the lake, causes the red color of the falls.
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Location: Waiotapu, New Zealand.
Why Unusual: The Wai-O-Tapu Thermal Wonderland is a hot spot for volcanic activity, offering many stunning sights. One fascinating sight is the Devil's Bath.The Devil's Bath Is Laden With Floating Sulfur is a relatively sedate lake with a striking neon green. The lake does not burst with volcanic reactions like other park areas, but its color shows. Sulfur deposits rise to the lake's surface, causing this strange hue. This means the lake also smells like sulfur.The lake smells like sulfur.You might want to look at the lake from a distance.
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Location: British Columbia, Canada
Why It's Unusual: Cultural importance exists, but science explains the lake's circles. Mineral deposits of calcium, sodium sulphates, and magnesium sulphate run from nearby hills into the lake. Each circle's color depends on its mineral mix.
The indigenous people of the Okanagan NationCanada's Spotted Lake—known to the Okanagan Nation as Kliluk—is a sacred site. Each circle offers different medicinal benefits. The Okanagan Nation has held this lake since 2001, after it was privately owned.
Also ranks #6 on The Strangest Places On Earth
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Location: Cap-Vert Peninsula, Senegal
Why It's Unusual: Lake RetbaAlso known as Lac Rose, Lake Retba lies very close to the Atlantic Ocean. This proximity gives it high salt content. A bacteria called Dunaliella salina attracts the salt and lives under the surface. This bacteria makes a red pigment, giving the lake a vivid red. The color is strongest during Senegal's dry season (November through June) and less bright during the rainy season (July through October).
High salt content makes the lake hard for most animals and plants. Locals use the lake to get salt and preserve fish.
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Location: Tomás Frías, Bolivia
Why It's Unusual: Laguna ColoradaThis lake hosts many species: alpacas, Andean foxes, cats, llamas, pumas, and the near-extinct James's flamingo. Sitting about 14,000 feet above sea level, it draws many tourists. Red algae give much of the water a bright red color. Borax deposits form white stripes, making a striking visual contrast. The lake carries the name “Ramsar Wetland of International Importance” and belongs to the Eduardo Avaroa Andean Fauna National Reserve.
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Location: Newark, California
Why They're Unusual: With deep shades of red, orange, and green, the Salt Ponds of San FranciscoThese ponds look like abstract paintings, not real water bodies. Salt levels differ in each pond; this dictates which microorganisms settle. Salty ponds draw Dunaliella bacteria, making them red. Moderately salty ponds show orange due to brine shrimp concentration. The least salty ponds turn green from algae. Weather also changes the ponds' colors.
Cargill, Inc., a food production and marketing company, once owned many Salt Ponds. In 2003, state, federal, and private agencies purchased 15,100 acres from Cargill, Inc. These groups now try to restore the land to its wetland condition.
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