periphyton
/pəˈrɪfɪtɑn/
noun
- A complex mixture of algae, bacteria, and other tiny organisms that grow on underwater surfaces like rocks, plants, or artificial objects.
- Divers collected samples of periphyton from the coral reef to study water quality.
- The periphyton on the riverbed is an important food source for aquatic insects.
- Excessive periphyton growth can clog water pipes and filters.
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