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.
James Cameron
On March 7, 2012, Cameron took the "Deepsea Challenger" submersible to the bottom of the New Britain Trench in a five-mile-deep solo dive. On March 26, 2012, Cameron reached the Challenger Deep, the deepest part of the Mariana Trench. He spent more than three hours exploring the ocean floor before returning to the surface. Cameron is the first person to accomplish the trip solo. He was preceded by unmanned dives in 1995 and 2009 and by Jacques Piccard and Don Walsh, who were the first men to reach the bottom of the Mariana Trench aboard the Bathyscaphe Trieste in 1960. Cameron has made a three-dimensional film of his dive. During his dive to the Challenger Deep, the data he collected resulted in interesting new finds in the field of marine biology, including new species of sea cucumber, squid worm, and giant single-celled amoeba, which are exciting finds due to the harshness of the environment.