Why do flying squirrels have flippy skin?

Flying squirrels don't actually *fly*, they glide. Their "flippy skin" is actually a membrane called a patagium that stretches from their wrists to their ankles. This membrane helps them glide through the air, similar to how a parachute works.

Here's how it works:

* Jumping: They start by leaping from a high point, like a tree branch.

* Patagium Extension: As they jump, they spread their legs and arms, extending the patagium. This creates a large surface area that catches the air.

* Gliding: The air pressure beneath the patagium creates lift, allowing them to glide for distances of up to 150 feet (45 meters).

* Landing: They use their tail for stability and control during the glide and to help them slow down before landing on a tree trunk or branch.

So, their "flippy skin" is a key adaptation for gliding and helps them move between trees quickly and efficiently, making them well-suited for their arboreal lifestyle.