A bright green film that looks like "paint" in the water. May contain small white specs in the water column. Looks like an oil slick, green specks, pea green layer on the surface. View images (PDF) or visit Identifying cyanobacterial blooms and scums for more examples.
- Floating algae
- Has a musty odor
- It has a fuzzy appearance and is often green in color with blue highlights.