How many people have been challenger deep?

As of my last update in September 2021, only a handful of people have been to the Challenger Deep, the deepest point in the Mariana Trench and in the world's oceans. It is estimated that only about 10 people have ever reached the bottom of the Challenger Deep.

Here are some prominent individuals who have been part of manned expeditions to the Challenger Deep:

1. Jacques Piccard and Don Walsh: In 1960, Jacques Piccard and Don Walsh made history as the first humans to reach the bottom of the Challenger Deep. They achieved this feat aboard the bathyscaphe Trieste, reaching a depth of approximately 10,911 meters (35,797 feet).

2. James Cameron: Filmmaker and explorer James Cameron completed a solo descent to the Challenger Deep in 2012. Using a custom-built submersible called the Deepsea Challenger, he reached a depth of approximately 10,898 meters (35,756 feet).

3. Victor Vescovo: In 2019, American businessman and explorer Victor Vescovo became the first person to reach the Challenger Deep five times. He completed dives using a custom-designed submersible named Limiting Factor, reaching a maximum depth of 10,902 meters (35,767 feet).

These individuals are the pioneers who have had the privilege of experiencing the extreme depths of the Mariana Trench and contributing to our scientific understanding of the deepest part of the world's oceans.

It's important to note that the number of people who have reached the Challenger Deep may change in the future as new exploration missions are undertaken.