A type of gill structure found in some mollusks like clams and mussels, where the filaments are arranged in a flat ribbon-like pattern.
From Latin 'filum' (thread) and 'branchia' (gill). The term describes the thread-like filaments that make up these specialized gill structures used for filter-feeding.
Filibranchs are nature's water filters—the parallel threads trap tiny food particles as water flows through, allowing a single mussel to filter hundreds of gallons of water daily and actually improve water quality.
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