Pond scum NYT crossword clue

The clue “Pond scum” refers to the greenish or slimy layer that can often be seen floating on the surface of stagnant or slow-moving bodies of water. This material is typically made up of microorganisms, particularly a certain type of aquatic plant. In crosswords, the clue calls for a short, scientific yet commonly known word that identifies this natural phenomenon.

The answer to the clue is **ALGAE**. This five-letter word describes the simple, plant-like organisms that grow in moist environments and are a common sight in ponds, lakes, and other wet areas. Algae play an important role in ecosystems, even if they’re sometimes considered unsightly in water features.