Algae: Easy Identification Of Freshwater

: Often Diatoms . They contain fucoxanthin and have silica in their cell walls, making them look like tiny shards of glass under a microscope. 3. Use Quick Field Tests

: Likely Blue-Green Algae ( Cyanobacteria ). They contain phycocyanin. Note: Some like Nostoc form firm, jelly-like "freshwater grapes" attached to rocks. Easy identification of freshwater algae

: These are microscopic and single-celled, making the water look like "pea soup" or spilled green paint. : Often Diatoms

: These look like hair-like strands or tangled mats. Spirogyra often feels slick and slimy. Pithophora feels "cottony" and coarse. Use Quick Field Tests : Likely Blue-Green Algae

: Diatoms often feel gritty (like sand) because of their glass-like silica shells. Identification Resources

Chara (skunkweed) grows from the bottom and often has a strong skunk or garlic-like smell. 2. Check the Color