These Emperor Penguins feed on fish and squid in the icy ocean. Getting into the sea is easy, but getting out is another story. How does a penguin haul its plump, 80-pound body up and over icy ledges that are several feet high, while avoiding nearby predators? Underwater video has revealed an amazing adaptation that allows the penguin to launch out of the water like a feathered torpedo.More info and transcript at BirdNote.org. Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.