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The Biggest of All
Blue whales have the largest penis of any animal — up to 10 feet long and weighing around 400 pounds.
Blue Whale
Balaenoptera musculus
The largest animal ever to exist has proportionally massive reproductive anatomy.
Vital Stats
🏷️ TypeBaleen whale (marine mammal)
🌍 Found InAll oceans — migrate between polar feeding and tropical breeding grounds
📏 Size24-30m long, 100-200 tonnes
⏳ Lifespan80-90 years
🔞 Sexual Maturity5-10 years
💕 Mating SystemPolygynous — males compete for females
📅 Mating SeasonWinter in tropical waters
🤰 Gestation10-12 months
👶 Offspring1 calf every 2-3 years (calf is 7m at birth)
🍆 Penis Size3.0 m
⏱️ Sex Duration30 seconds
🔬 Notable AnatomyLargest penis in nature — 2.4-3m (8-10 feet) long; ejaculates ~20 liters
⚖️ Sexual DimorphismFemales slightly larger than males