Penguin Feathers Are Super Dense
Look through your closet for the thickest coat you own. It’s a safe bet that it’s not nearly as dense as penguin feather, which is what’s in this photo. Penguins have approximately 100 feathers per square inch of their skin. No wonder they always seem so comfortable in the chilly weather. And don’t worry, this piece of penguin skin was taken for scientific study after the penguin passed away of natural causes.