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Macro view of organic pond scum and oxygen bubbles trapped in a thick layer of green and brown filamentous algae on the water surface.
A macro close-up shot of a severely clogged and dirty shower drain, blocked with hair, rust, and soap scum
A dense growth of green filamentous algae, commonly known as pond scum or horsehair algae
Unclean bathroom sink and tap with hard water stains and toothpaste residue, hygiene problem concept
The scum on the pond doesn't look inviting

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