These giant crabs, also known as robber crabs, live in huge numbers on islands in the South Pacific. But since they can't swim, we have to ask, how did they end up on these isolated islands in the first place?Subscribe: http://bit.ly/BBCEarthSub #PacificOcean #Crustacean #HermitCrabsWatch more: Best of BBC Earth 🌍 https://bit.ly/BestOfBBCEarthBest Animal Fights 🥊 https://bit.ly/BestAnimalFightsVideos over 10 minutes ⏰ https://bit.ly/3SHJCEJPlanet Earth III 🌍 https://bit.ly/PlanetEarthIIIPlaylistFrozen Planet II ❄️ https:/bit.ly/FrozenPlanetIIPlaylistBlue Planet II in 4k 🌊 https://bit.ly/BluePlanetII4kPlaylistTaken from South Pacific.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