Bathyscaphe Trieste
Trieste is a Swiss-designed, Italian-built deep-diving research bathyscaphe, which with its crew of two reached a record maximum depth of about , in the deepest known part of the Earth's oceans, the Challenger Deep, in the Mariana Trench near Guam in the Pacific. On 23 January 1960, Jacques Piccard (son of the boat's designer Auguste Piccard) and US Navy Lieutenant Don Walsh achieved the goal of Project Nekton.
Kaikō ROV
On 23 January 1960, Don Walsh and Jacques Piccard were the first men to descend to the bottom of the Challenger Deep in the "Trieste" bathyscaphe. Though the initial report claimed the bathyscaphe had attained a depth of 37,800 feet, the maximum recorded depth was later calculated to be . At this depth, the water column above exerts a barometric pressure of , over one thousand times the standard atmospheric pressure at sea level. Even at this great depth and pressure, a small flounder-like fish was seen moving away from the spotlight of the bathyscaphe. Since then, only one manned vessel has ever returned to the Challenger Deep, the Deepsea Challenger, which was piloted by director James Cameron on March 26, 2012 to the bottom of the trench.