Answer: No natural light penetrates at the depth of the trench and temperatures are only a few degrees above freezing. The water pressure at Challenger Deep is an astounding 1,000 times greater than the pressure at sea level. Yet despite the crushing pressure, frigid cold, and eternal darkness, life manages to exist.
Explanation: Even though National Geographic Explorer-in-Residence James Cameron successfully piloted a submersible —the DEEPSEA CHALLENGER —on the first solo dive to the deepest known part of the Earth’s ocean on March 26, 2012, the expedition was not without difficulties.