These male icy water giants would do anything to protect their harems - and they're not afraid to fight. Subscribe: http://bit.ly/BBCEarthSub Watch more videos from BBC Earth: Planet Earth http://bit.ly/PlanetEarthPlaylist Blue Planet http://bit.ly/BluePlanetPlaylist Planet Earth II http://bit.ly/PlanetEarthIIPlaylist Planet Dinosaur http://bit.ly/PlanetDinoPlaylist Check out the other two channels in our BBC Earth network: BBC Earth Unplugged: http://bit.ly/BBCEarthUnplugged BBC Earth Lab: http://bit.ly/BBCEarthLabYouTubeChannel Wild West This wild frontier has been forged by the elements and built by monumental forces. Over millennia America's most iconic landscapes have been carved out; wind sculpted deserts, like Death Valley and the Grand Canyon; giant redwood forests fed by precious waters; and extreme coastlines - from the wave sculpted shores of the pacific to the warm sheltered sea of cortex. Nowhere in America is more extreme, more varied and more spectacular than the Wild West. 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 astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this. This is a commercial channel from BBC Studios. Service & Feedback https://www.bbcstudios.com/contact/contact-us/