How do hippo calfs feed? How to hippos travel underwater. There's a lot more to hippos, beneath the surface. Subscribe: bit.ly/BBCEarthSub Natural World: Hippos bbc.in/2yfmBjI Watch more: Planet Earth bit.ly/PlanetEarthPlaylist Blue Planet bit.ly/BluePlanetPlaylist Planet Earth II bit.ly/PlanetEarthIIPlaylist Planet Dinosaur bit.ly/PlanetDinoPlaylist Natural World: Hippos The hippo. A territorial beast that spends most of its time in water. An aquatic mammal that can't swim. A two-tonne hulk that can sprint faster than a human. And a seemingly placid oaf that guards its family with fierce cunning. Using specialist camera technology to get up close and personal with hippos for the very first time, this film follows these animals through the seasons in the Okavango Delta. It reveals that while hippos may be boisterous, aggressive and bold, they are also sensitive, sociable and often comical. An intimate, immersive portrayal revealing a side of hippos never seen – or heard – before. Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this. Want to share your views with the team? Join our fan panel: tinyurl.com/YouTube-BBCEarth-FanPanel This is a page from BBC Studios who help fund new BBC programmes. Service information and feedback: bbcworldwide.com/vod-feedback--contact-details.aspx