Among the DEEPSEA CHALLENGER's panoply of tools is a folding robotic arm, illustrated above.
With a folding robotic arm, he'll be able to collect rocks, animals, and seafloor core samples for later study on the surface. (Related: "Life Is Found Thriving at Ocean's Deepest Point.")
Before Cameron's dive, the team also plans to send unmanned "landers" to the trench bottom. Resembling skinny phone booths, the 13-foot-tall (4-meter-tall), camera-equipped submersibles will carry bait to lure sea creatures into plastic cylinders, which can be retrieved by the team when the landers surface.
"The animals on the inside are captured" and even after ascent, "still cold, still under pressure," Kevin Hardy, senior development engineer at the Scripps Institution of Oceanography in San Diego, California, and a member of the DEEPSEA CHALLENGE team, told National Geographic.
(Read more about DEEPSEA CHALLENGE science.)