Pictures: Prince Harry helps 500 Elephants project in AfricaPublished29 October 2016Image source, PAImage caption, Prince Harry has spent almost three weeks in Malawi in Africa. He's been working on a project to protect threatened animals, in particular elephants, by moving hundreds of them to areas where numbers have fallen.Image source, Getty ImagesImage caption, The project is called 500 elephants and is moving the animals 350 kilometres across the country of Malawi to a wildlife park, where the elephants will be able to live safely without fear of poachers.Image source, PAImage caption, Elephants are under threat because they're killed for their tusks. The tusks are made of ivory and that is used to make things like jewellery and ornaments in some countries. It is illegal to buy and sell ivory around the world, but some people will still pay a lot of money for it.Image source, Getty ImagesImage caption, Prince Harry helped with the first part of the project, when 261 elephants were re-homed. He explained this photo: "Marking one of the young males so that he is easily identifiable when the family group is released back into the bush and we can keep them together. The spray paint disappears after a few days."Image source, Getty ImagesImage caption, Here the prince is working to help move an adult elephant who wouldn't budge! It did budge in the end, with the help of some medicine. The remaining 239 elephants in the mission will be moved in summer 2017.More on this storyWhy 500 elephants are moving home. Video, 00:01:33Why 500 elephants are moving homePublished28 July 20161:3311 things you never knew about elephants. Video, 00:01:1311 things you never knew about elephantsPublished26 September 20161:13Saving Africa's elephants: What's being done? Video, 00:03:14Saving Africa's elephants: What's being done?Published5 October 20163:14Five animal facts you might not know. Video, 00:01:06Five animal facts you might not knowPublished12 May 20161:06Baby elephant face plant! Video, 00:00:58Baby elephant face plant!Published5 October 20160:58Baby elephant gets stuck in a drain. Video, 00:00:21Baby elephant gets stuck in a drainPublished31 May 20160:21