Last one in's a rotten egg! Gentoo penguins aren't the most graceful creatures when on land, but underwater it's a different story. Their flippers help them reach speeds of up to 22 miles per hour, making them the fastest diving bird. #EarthCapture by wikstrom_photography . . . . #GentooPenguins #Penguins #PenguinsOfInstagram #Antartica #WildlifePhotography #NaturePhotography