What's that slimy stuff on the bottom of the lake? Golden brown algae

Algae on the surface of the pond hi-res stock photography and images - Page 3 - Alamy

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

What is That Black Stuff Floating in Sunset Lake?

Green Stuff in the Water - Prairie Rivers of Iowa

Lake Okeechobee's Toxic Algae Blooms Threaten Florida and Could Get Worse - The New York Times

Aquarium Slime: What is it and what to do about it?

Algae & Weed Identification, Clean Ponds

Aquarium Red Slime Algae Causes and Solutions

Torch Lake Interlochen Public Radio

Elk Rapids Interlochen Public Radio

Michigan's Torch Lake sees growth of golden brown algae

Plant/algae help (lake tang tank) : r/Cichlid

Toxic algae cocktail brews in Lake Erie