Cameron hits Challenger Deep , part of the Mariana Trench , a spokeswoman says . He 's the first person to dive solo to that spot , the deepest in any of the world 's oceans . Comment:
Cameron hits Challenger Deep , part of the Mariana Trench , a spokeswoman says . He 's the first person to dive solo to that spot , the deepest in any of the world 's oceans . Cameron is the director of blockbuster hits such as `` Titanic '' and `` Avatar ''