Hippos can sleep underwater using a reflex that allows them to bob up, take a breath, and sink back down without even waking up.

Hippos can hold their breath for up to 5 minutes, and their “sleep swimming” reflex is completely automatic even newborn calves are born knowing how to do it. What’s even more fascinating is that hippos close their nostrils and ears underwater using built-in muscular flaps, allowing them to nap safely without drowning. Their bodies are so buoyant that they rise and sink naturally with each breath, almost like a living submarine on autopilot.

😵‍💫happy as a hippo underwater😅

Napping and swimming all day gets exhausting $Mars Cfmo6asAsZFx6GGQvAt4Ajxn8hN6vgWGpaSrjQKRpump

Humans can sleep walk to the fridge, eat leftover pizza, pee in the pantry and go back to bed without ever waking up.

That reflex is called an involuntary surfacing mechanism it’s how they rest safely while keeping cool in the water Evolution is wild

God is the perfect engineer.

Nice one

oh my god, it's not dead!!!!

Superb

damn, hippo's on auto-sleep 🤣😂

They probably don’t even know they do this

That's crazy man. I cannot even sleep above water most of the times

Incredible adaptation! Shows how life evolves amazing ways to survive and thrive. 👏🌿

Nature’s efficiency: hippos sleep underwater without a care in the world. 🦛💤

the fucking sedateness of big animals…the bigger, the coollier…

Hippos: mastering the art of multitasking while asleep since forever. 😏🌊

how are they breathing

Seems quite rare to sleep upside down

😅

I thought bro was drowning for a moment

Me napping through Zoom calls like a hippo underwater 😴💦

Genuine Actor

When you’ve got deadlines but still perfect the art of chilling… Hippo mode activated. 😎💤

Hippos like died

😂 creator didn’t put ich thoughts into this solution

🙀😂