Bathyscaphe Trieste
On 23 January 1960, she reached the ocean floor in the Challenger Deep (the deepest southern part of the Mariana Trench), carrying Jacques Piccard and Don Walsh. This was the first time a vessel, manned or unmanned, had reached the deepest known point of the Earth's oceans. The onboard systems indicated a depth of , although this was revised later to ; fairly recently, more accurate measurements have found Challenger Deep to be between and deep.
Kathy Troutt
At age 16 Kathy Troutt made the "Guinness Book of Records" for the longest female deep sea scuba dive, breathing ordinary air for 320 feet off Sydney Harbour with former Royal Australian Navy diver, Wally Reynolds. Kathy dived on Sydney Harbour shipwrecks in 1965