Exploring the deep! On January 23, 1960, Jacques Piccard and US Navy Lieutenant Don Walsh made the first epic voyage into the deep. The research bathyscaphe Trieste carried the two men 10,911 meters below the ocean surface to the Challenger Deep of the Mariana Trench near Guam in the Pacific. “Their dive fueled public interest in the deep ocean and opened the door to possibilities never before available,” according to our friends over at @oceandiscleague. “Today, worldwide, we celebrate the wond