James Cameron has set a new record for the deepest solo dive, a depth of 35,756 feet.1James Cameron has set a new record for the deepest solo dive, a depth of 35,756 feet.

James Cameron has set a new record for the deepest solo dive, a depth of 35,756 feet.

And he is still down there at this moment.

Hovering in what he’s called a vertical torpedo, Cameron is likely collecting data, specimens, and imagery unthinkable in 1960, when the only other explorers to reach Challenger Deep returned after seeing little more than the silt stirred up by their bathyscaphe. After as long as six hours in the trench, Cameron—best known for creating fictional worlds on film (Avatar, Titanic, The Abyss)—is to jettison steel weights attached to the sub and shoot back to the surface. Meanwhile, the expedition’s scientific support team awaits his return aboard the research ships Mermaid Sapphire and Barakuda, 7 miles (11 kilometers) up.