How many people have been challenger deep?

As of October 2023, only a small number of individuals have reached Challenger Deep, the deepest known point in the Earth's oceans, located in the Mariana Trench. Notable explorers include Jacques Piccard and Don Walsh, who first reached it in 1960, and filmmaker James Cameron, who made a solo dive in 2012. Other expeditions have also taken place, bringing the total number of people who have visited Challenger Deep to around 15.