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.
Bottlenose dolphin
The deepest dive ever recorded for a bottlenose dolphin was 300 meters (990 feet). This was accomplished by Tuffy, a dolphin trained by the US Navy.
Nellie, the longest-lived Atlantic bottlenose dolphin in human care, died at age 61 on April 30, 2014. Nellie was born on Feb, 27, 1953 at Marineland.