Kathyrn D. Sullivan America's first space walker has also become the
first woman to experience the deepest sea dive ever (seven miles down).
To the Challenger Deep in the Marianas Trench near Guam.

See:

https://www.forbes.com/sites/jimclas.../#3183a7081592

https://www.ibtimes.com/kathryn-sull...-point-2990267


Dave