First, look at how the algae is structured in the water. Most common types fall into these three categories:
If you are observing algae in person, these simple characteristics can narrow it down: Easy identification of freshwater algae
: Sites like the NIWA Algae ID Guide and the Landcare Research Guide provide visual references for different habits. First, look at how the algae is structured in the water
: 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 They contain fucoxanthin and have silica in their
Chara (skunkweed) grows from the bottom and often has a strong skunk or garlic-like smell. 2. Check the Color
: These look like hair-like strands or tangled mats. Spirogyra often feels slick and slimy. Pithophora feels "cottony" and coarse.