What is another word for pond scum?
Pronunciation: [pˈɒnd skˈʌm] (IPA) 
Pond scum is a term used to describe the layer of algae or other microorganisms that float on the surface of a stagnant body of water. This unsightly layer is also commonly referred to as algae bloom, duckweed, green slime, or water moss. These synonyms all refer to the greenish, slimy film that can accumulate on the surface of ponds, lakes, and other bodies of water during periods of warm weather or excessive nutrients in the water. Often, pond scum can negatively affect aquatic ecosystems by reducing oxygen levels, decreasing water quality, and causing fish kills. It is important to monitor and manage pond scum to maintain the health of our waterways.
