03/09/2026
I have my eye on the weekend!!!
Here is a cool fact about a hippos eye: Hippos possess a specialized, transparent third eyelid called a nictitating membrane.
Hippos spend up to 16 hours a day submerged in rivers and lakes, this clear membrane acts like a natural pair of built-in goggles. It slides horizontally across the eye to protect it from aquatic debris, mud, and waterborne bacteria while still allowing the hippo to see clearly underwater.
Additionally, their eyes (along with their ears and nostrils) are positioned on the very top of their skull. This anatomical setup allows them to keep almost their entire multi-ton body submerged and cool while maintaining full visual awareness of their surroundings above the surface.