The English Channel is the busiest waterway in the world, with over 500 ships from all corners of the globe passing through every day, and everyone from fisherman, ferries, yachters, channel swimmers and freighters carrying the UKs imports and exports regularly crossing each other's wakes. In this observational series we follow the lives of those that use the channel for pleasure, those that earn a living from it, and most importantly those who keep it safe. In its second series, the Channel's inhabitants face particular challenges posed by the winter months on and around the water - whether it's baby seals struggling with the elements or a giant cargo ship grounded on a sandbank.