Deep,Deep,Deep Diving.............

Is the Marianas Trench still considered to be the deepest part of the world’s oceans, or are even deeper places being revealed?
Also, have there been any recent missions back to the Marianas Trench since the Trieste was there back in 1960?

Guiness still lists it as the deepest part of the ocean. The deepest part of the trench is the Challenger Deep. Which is 6.8 miles down.