The fruit fly species Drosophila bifurca produces sperm cells that, when uncoiled, measure about 58 mm long — roughly 20 times the length of the fly's own body and by far the longest sperm cell of any animal known, tens of thousands of times longer than a human sperm cell (about 0.05 mm).
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The fruit fly species Drosophila bifurca produces sperm cells that, when uncoiled, measure about 58 mm long — roughly 20 times the length of the fly's own body and by far the longest sperm cell of any animal known, tens of thousands of times longer than a human sperm cell (about 0.05 mm).
The greatest length, when fully uncoiled, of a single sperm cell recorded in any animal species, as measured in reproductive biology research.
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Permanent ID limitsregistry.com/limits/LR-LARGEST-KNOWN-ANIMAL-SPERM-CELL
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Limits Registry. LR-LARGEST-KNOWN-ANIMAL-SPERM-CELL. Longest sperm cell of any known animal. 2026.