Deep sea explorer Don Walsh, part of 2-man crew to first reach deepest point of ocean, dies at 92

Retired Navy Capt. Don Walsh, an explorer who in 1960 was part of a two-man crew that made the first voyage to the deepest part of the ocean in the Mariana Trench has died

​ABC News: US Retired Navy Capt. Don Walsh, an explorer who in 1960 was part of a two-man crew that made the first voyage to the deepest part of the ocean in the Mariana Trench has died