"Algal bloom"

#12926370

30 October 2025

Floating garbage and thick layers of algae cover the surface of the Duri River at Tanjung Selor Street in Central Jakarta, Indonesia, on October 29, 2025. Pollution from household waste continues to threaten water quality and the health of residents living along the riverbanks.

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#12665776

22 August 2025

Green algae cover the lake at Daecheong Lake in Daejeon, South Korea, on August 23, 2025. Green algae blooms occur when nutrients like nitrogen and phosphorus from land are washed into water bodies by rain, and water temperatures rise, creating ideal conditions for harmful cyanobacteria to thrive. Cyanobacteria, a type of phytoplankton, are essential components of aquatic ecosystems. However, when they proliferate excessively, they can produce foul odors, degrade water quality, and even cause fish deaths. This year, green algae in Daecheong Lake begin spreading in the latter part of last month.

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#12665777

22 August 2025

Green algae cover the lake at Daecheong Lake in Daejeon, South Korea, on August 23, 2025. Green algae blooms occur when nutrients like nitrogen and phosphorus from land are washed into water bodies by rain, and water temperatures rise, creating ideal conditions for harmful cyanobacteria to thrive. Cyanobacteria, a type of phytoplankton, are essential components of aquatic ecosystems. However, when they proliferate excessively, they can produce foul odors, degrade water quality, and even cause fish deaths. This year, green algae in Daecheong Lake begin spreading in the latter part of last month.

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#12665778

22 August 2025

Green algae cover the lake at Daecheong Lake in Daejeon, South Korea, on August 23, 2025. Green algae blooms occur when nutrients like nitrogen and phosphorus from land are washed into water bodies by rain, and water temperatures rise, creating ideal conditions for harmful cyanobacteria to thrive. Cyanobacteria, a type of phytoplankton, are essential components of aquatic ecosystems. However, when they proliferate excessively, they can produce foul odors, degrade water quality, and even cause fish deaths. This year, green algae in Daecheong Lake begin spreading in the latter part of last month.

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#12665779

22 August 2025

Green algae cover the lake at Daecheong Lake in Daejeon, South Korea, on August 23, 2025. Green algae blooms occur when nutrients like nitrogen and phosphorus from land are washed into water bodies by rain, and water temperatures rise, creating ideal conditions for harmful cyanobacteria to thrive. Cyanobacteria, a type of phytoplankton, are essential components of aquatic ecosystems. However, when they proliferate excessively, they can produce foul odors, degrade water quality, and even cause fish deaths. This year, green algae in Daecheong Lake begin spreading in the latter part of last month.

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#12665780

22 August 2025

Green algae cover the lake at Daecheong Lake in Daejeon, South Korea, on August 23, 2025. Green algae blooms occur when nutrients like nitrogen and phosphorus from land are washed into water bodies by rain, and water temperatures rise, creating ideal conditions for harmful cyanobacteria to thrive. Cyanobacteria, a type of phytoplankton, are essential components of aquatic ecosystems. However, when they proliferate excessively, they can produce foul odors, degrade water quality, and even cause fish deaths. This year, green algae in Daecheong Lake begin spreading in the latter part of last month.

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#12625945

8 August 2025

The Salton Sea is in Imperial County, California, on February 14, 2015.

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#12625946

8 August 2025

The Salton Sea is in Imperial County, California, on February 14, 2015.

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#12625947

8 August 2025

The Salton Sea is in Imperial County, California, on February 14, 2015.

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#12263724

14 April 2025

Cyanobacteria, also known as blue-green algae, pollute the waters of a lake on the outskirts of Paris. These bacteria are responsible for cyanotoxins that can be toxic to humans and animals, leading to the closure of the lake in Creteil, France, on April 4, 2025.

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#12263725

14 April 2025

Cyanobacteria, also known as blue-green algae, pollute the waters of a lake on the outskirts of Paris. These bacteria are responsible for cyanotoxins that can be toxic to humans and animals, leading to the closure of the lake in Creteil, France, on April 4, 2025.

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#12263726

14 April 2025

Cyanobacteria, also known as blue-green algae, pollute the waters of a lake on the outskirts of Paris. These bacteria are responsible for cyanotoxins that can be toxic to humans and animals, leading to the closure of the lake in Creteil, France, on April 4, 2025.

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#11501375

22 August 2024

A warning about golden algae blooms in Lake Dzierzno Duze in Rzeczyce, southern Poland on August 20th, 2024. Since the beginning of August, over 115 tons of dead fish have been removed from Lake Dzierzno Duze and the Gliwice Canal. The mass fish die-off is linked with toxic golden algae blooms. The climate ministry oversaw an experiment involving dosing hydrogen peroxide (H2O2), a water treatment agent, into the Klodnica River, which is the main supply of the Gliwice Canal's water.

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#11501372

22 August 2024

Dead fishes are being removed from Lake Dzierzno Duze in Rzeczyce, southern Poland on August 20th, 2024. Since the beginning of August, over 115 tons of dead fish have been removed from Lake Dzierzno Duze and the Gliwice Canal. The mass fish die-off is linked with toxic golden algae blooms. The climate ministry oversaw an experiment involving dosing hydrogen peroxide (H2O2), a water treatment agent, into the Klodnica River, which is the main supply of the Gliwice Canal's water.

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#11501376

22 August 2024

Members of Territorial Defence Force are seen on a boat after removing dead fishes from Lake Dzierzno Duze in Rzeczyce, southern Poland on August 20th, 2024. Since the beginning of August, over 115 tons of dead fish have been removed from Lake Dzierzno Duze and the Gliwice Canal. The mass fish die-off is linked with toxic golden algae blooms. The climate ministry oversaw an experiment involving dosing hydrogen peroxide (H2O2), a water treatment agent, into the Klodnica River, which is the main supply of the Gliwice Canal's water.

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#11501371

22 August 2024

Members of Territorial Defence Force remove dead fishes from Lake Dzierzno Duze in Rzeczyce, southern Poland on August 20th, 2024. Since the beginning of August, over 115 tons of dead fish have been removed from Lake Dzierzno Duze and the Gliwice Canal. The mass fish die-off is linked with toxic golden algae blooms. The climate ministry oversaw an experiment involving dosing hydrogen peroxide (H2O2), a water treatment agent, into the Klodnica River, which is the main supply of the Gliwice Canal's water.

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