Deep Ocean: Descent into the Mariana Trench

After capturing a giant squid on film, NHK's deep-sea film crew explores our planet's deepest point -- the Challenger Deep in the Mariana Trench! Challenger Deep is 10,920 meters below the ocean's surface, a depth at which water pressure is thought to destroy proteins and make life impossible. The crew teamed up with researchers for a two-month mission to probe these depths for the first time ever. Together, they developed a special unmanned vessel and search equipment fitted with a 4K camera. The team broke the world record for the deepest recording of a fish when it filmed the angelic Mariana Snail Fish. What other creatures lie in the Challenger Deep? Join this journey to the extreme limits of life on earth. (NHK / Nippon Hōsō Kyōkai)