Mr. McLean said the 16,500 pounds-per-square inch pressure isn't bone-crushing, "it's obliterating."
Cameron, others plan to explore the Mariana Trench →
"This is an awakening for the public on how little we know about our planet," McLean said. "We don't have to look up in the sky to find what's out there. We've got it in our oceans."
James Cameron, others to explore the real abyss →