Don Walsh
Overview
 
Don Walsh is an American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 oceanographer, explorer and marine policy specialist. He and Jacques Piccard
Jacques Piccard
Jacques Piccard was a Swiss oceanographer and engineer, known for having developed underwater vehicles for studying ocean currents. He was one of only two people, along with Lt...

 were aboard the bathyscaphe
Bathyscaphe
A bathyscaphe is a free-diving self-propelled deep-sea submersible, consisting of a crew cabin similar to a bathysphere, but suspended below a float rather than from a surface cable, as in the classic bathysphere design....

 Trieste
Bathyscaphe Trieste
The Trieste is a Swiss-designed, Italian-built deep-diving research bathyscaphe with a crew of two, which 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, on January 23, 1960, crewed by Jacques Piccard ...

 when it made a record maximum descent into the Mariana Trench
Mariana Trench
The Mariana Trench or Marianas Trench is the deepest part of the world's oceans. It is located in the western Pacific Ocean, to the east of the Mariana Islands. The trench is about long but has a mean width of only...

 on 23 January 1960, the deepest point of the world's ocean. The depth was measured at 35813 feet (10,915.8 m), but later and more accurate measurements have measured it at 35,798 feet (10,911 m).
Walsh has been associated with ocean science
Ocean science
Ocean science can refer to*Oceanography*Ocean science, an open access scientific publication of the European Geosciences Union...

, engineering
Engineering
Engineering is the discipline, art, skill and profession of acquiring and applying scientific, mathematical, economic, social, and practical knowledge, in order to design and build structures, machines, devices, systems, materials and processes that safely realize improvements to the lives of...

, and marine policy
Joint Ocean Commission Initiative
The Joint Ocean Commission Initiative is a bipartisan, collaborative group in the United States that aims to "accelerate the pace of change that results in meaningful ocean policy reform." The Joint initiative was established by the members of two major U.S.-based oceans commissions: the Pew...

 for more than 50 years.
 
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