Having blood-filled or blood-rich gills; describing aquatic animals whose gills are supplied with blood vessels.
From Greek 'haima' (blood) + Latin 'branchia' (gill) + '-ate' suffix. A technical term for gill structure in aquatic organisms.
Fish have these sophisticated blood-filled gills that allow them to extract oxygen from water—it's an engineering marvel that lets them breathe underwater in a completely different way than lungs!
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