Last Updated
：2025/11/20
algal mat
（ plural ）
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an accumulation of filamentous algae, either freely floating or rolling along the sea bed. / a mass of diatoms etc. covering soft bottoms.
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algal mat
After the storm, an algal mat rolled into the shallow bay, covering the rocks and creating a slick surface.
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After the storm, an algal mat rolled into the shallow bay, covering the rocks and creating a slick surface.
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