Researchers have returned from the first detailed study of the Mariana Trench aboard Schmidt Ocean Institute's research vessel Falkor. The expedition set many new records, including the deepest rock samples ever collected and the discovery of new fish species at the greatest depths ever recorded.<img src="//feeds.feedburner.com/~r/sciencedaily/~4/j3nVrdXOGyU" height="1" width="1" alt=""/>
