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.

Blue-green algae - Government of Nova Scotia, Canada

How toxic green slime caused a state of emergency in Florida

Rivers Are Drowning in Toxic Sludge

Blue-Green Algae Control in Ponds - Does your pond look like pea soup?

Part 1: How to remove algae and sludge/slime from your pond easily

Filamentous Algae Explained - Healthy Ponds

What is that green slime on my lake?

Why Are Our Waters Turning Green?

Floating green mystery blobs in wildlife pond - Wildlife Ponds Forum - Pond Life