Gentoo Penguins are the fastest penguins in the world. A group of researchers used the penguin’s streamlined shape to design a new undersea robot called the Quadroin. This robo-penguin has sensors to measure ocean conditions and currents. It’s particularly suited to studying eddies, which are smaller and short-lived than major ocean currents but help draw nutrients to the ocean surface, supporting the marine food web. Learn more at BirdNote.org.