🐙
The Ultimate Size Difference
Female blanket octopuses are 40,000 times heavier than males — the most extreme size difference of any non-microscopic animal.
Blanket Octopus
Tremoctopus
These stunning open-ocean octopuses have the most extreme size difference between sexes of any non-microscopic animal.
Vital Stats
🏷️ TypeOctopus (cephalopod)
🌍 Found InOpen tropical and subtropical oceans — pelagic
📏 SizeFemales: up to 2m with blanket | Males: 2.4cm (walnut-sized)
⏳ Lifespan1-2 years (estimated)
💕 Mating SystemMales sacrifice themselves; hectocotylus breaks off inside female
👶 OffspringFemales carry thousands of eggs
🍆 Penis Size1.5 cm
⏱️ Sex Duration30 seconds
🔬 Notable AnatomyMost extreme sexual dimorphism of any animal — females are 40,000x heavier than males
⚖️ Sexual DimorphismThe most extreme in the animal kingdom; females 10,000-40,000x male weight