Revisit British journalist Anne Diamond’s interview with two incredible deep-sea explorers— oceanographer Don Walsh and his son, Kelly. In 1960—along with Swiss engineer Jacques Piccard—Don and Jacques became the first explorers to reach the deepest place on earth, the Challenger Deep in the Mariana Trench. Following in his father’s footsteps, Kelly repeated the same feat in 2020 on board the submersible Limiting Factor. Listen as Don and Kelly share stories about reaching the ocean floor and exploring Antarctica.