Dugongs, also known as sea cows, spend up to ten hours a day grazing on tough seagrass. While they work hard for their meals, the remora fish that follow them around have found an unusual yet easier way to feed... Blue Planet III returns to uncover extraordinary new stories and lives hidden beneath our oceans. Find out where to watch the full series 👉 https://www.bbcearth.com/shows/blue-planet-iii #BBCEarth #DavidAttenborough #Nature #BluePlanet3 Subscribe: http://bit.ly/BBCEarthSub Sign up to our newsletter for the latest news, updates and exclusives from BBC Earth https://www.bbcearth.com/newsletter Watch more: Best of BBC Earth 🌍 https://bit.ly/BestOfBBCEarth Best Animal Fights 🥊 https://bit.ly/BestAnimalFights Videos over 10 minutes ⏰ https://bit.ly/3SHJCEJ Planet Earth III 🌍 https://bit.ly/PlanetEarthIIIPlaylist Frozen Planet II ❄️ https:/bit.ly/FrozenPlanetIIPlaylist Blue Planet II in 4K 🌊 https://bit.ly/BluePlanetII4kPlaylist 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. This is a commercial page from BBC Studios. Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx