Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
There's a swing on the edge of a cliff in Ecuador. It has no safety measures and is called the 'Swing at the End of the World'.
22
Between 2007 and 2012, Bill Gates gave away $28 billion; saving 6 million lives.
34