So I was half asleep/half watching the History Channel this morning that being th the show they have on about the “Most” whatever (highest mountain, coldest witch’s tit, whathaveyou) when I heard it mentioned that the “most” deepest part of the ocean was the Mariana’s Trench, which was visited, once, in 1960.
Fortunatly they didn’t specify that it was for only 20 minutes so we still have an edge on the general public…