Hundreds of young men have died trying to use boats to get from Senegal to the Canary Islands.    On this episode of the Sky News Daily, Niall Paterson hears about what's been called the "deadliest and busiest migrant passage in the world".    Niall is joined by our Africa correspondent Yousra Elbagir who has been to the fishing town of Mbour on the Senegalese coast to see the scale of the problem.  Plus, in the UK, our communities correspondent Becky Johnson has been speaking to asylum seekers who say they're considering not attending appointments which are a condition of their immigration bail.  It comes as the Home Office tries to trace thousands of missing asylum seekers, with a view to deporting some of them to Rwanda in a bid to deter illegal small boat Channel crossings. Producer: Emma Rae Woodhouse  Podcast promotions producer: David Chipakupaku    Editor: Paul Stanworth