Posted by: Rebecca Whitham, Communications With Olympics in full swing, we’re awarding some medals to our own animal all-stars, some of the best athletes at Woodland Park Zoo. Competition: Swimming Penguin porpoising with purpose. Photo by Dennis Dow/Woodland Park Zoo. Gold medal: Humboldt penguin Humboldt penguins may seem awkward on land, but in the water they truly fly, getting up to speeds of 17 mph and bursting into glorious dives known as porpoising, where they leap out of the water to catch a breath and dive back in again without losing speed. Doing the backstroke. Photo by Ryan Hawk/Woodland Park Zoo. Silver medal: River otter Otters have a killer backstroke, though their form might differ from our own. Plus, their propensity to create whirlwinds that kick up bottom-feeding fish may throw off the competition. Hippo submerging. Photo by Mat Hayward/Woodland Park Zoo. Bronze medal: Hippo Hippos get up to about 5 mph underwater, but