Did you know that in 2012, Director James Cameron went to Challenger Deep, the deepest part of the Mariana Trench; reaching a frightening 10,908 metres (35,787 ft) below. Cameron said that he realised "how tiny you are down in this big, vast, black unknown and unexplored place". In fact, humanity arguably knows less about the ocean floor than we do about space. Take a look at the new video discussing this here.










