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.
Pseudoliparis amblystomopsis
In October 2008, a team from British and Japanese institutes discovered a shoal of "Pseudoliparis amblystomopsis" at a depth of about in the Japan Trench. These were, at the time, the deepest living fish ever recorded on film. The record was surpassed by a type of snailfish filmed at a depth of in December 2014, and extended in May 2017 when another snailfish was filmed at a depth of . This deepest-water so-called "ethereal snailfish" remain undescribed, but a close relative found only slightly shallower in the Mariana Trench was described as "Pseudoliparis swirei" in late 2017.