How do fish breathe underwater?
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Fish breathe underwater using gills, which extract oxygen from water. Water flows over gill filaments, where blood absorbs the oxygen and expels carbon dioxide, enabling fish to survive in aquatic environments.
Fish breathe underwater by using their gills to extract oxygen from water. Water passes over the gill membranes, where blood vessels absorb dissolved oxygen and expel carbon dioxide, allowing fish to live in aquatic environments.
Fish utilize gills to breathe. As water flows over these specialized organs, oxygen is extracted from the water and carbon dioxide is expelled, enabling fish to thrive underwater without needing air from above the surface.