What is that green slime on my lake?

The green slime is caused by Cyanobacteria. They are found almost everywhere on Earth, but now due to our actions that are warming the planet and altering water quality, they are blooming more frequently and poisoning our lakes and rivers in the process.

How to Eliminate String Algae (Debris) in your Pond - Marquis Gardens

Causes and Cures for Green Aquarium Water

Headed to a lake or river today? Look out for blooming harmful algae! - Washington State Department of Ecology

Green Water -- Causes and Cures

10 Ways to Get Rid of Algae from a Dam - Water Quality Solutions

Pond Scum Uses In The Garden - Composting Algae From Ponds

Cyanobacteria

How To Fix Green Pond Water - Water X Scapes

How to Remove Green Algae From a Pond

What do you call the green thing growing on rocky surfaces where a small amount of water is constantly flowing? - Quora

Green slime being sampled from Williams Lake - The Williams Lake Tribune

How to Fight the 6 Most Common Types of Algae in Your Fish Tank – Aquarium Co-Op

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In the fight against green slime on Lake Erie, farmers try to clean up their act

FS1231: Filamentous Algae in Waterways (Rutgers NJAES)