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Russian President Vladimir Putin hopped into a bathyscaphe to dive 50 meters deep underwater and pay tribute to the crew of a Soviet submarine, which mysteriously disappeared in the Baltic Sea during WWII while fighting the Nazis. Known for his love of exploring nature’s depths and heights, Putin on Saturday embarked on a deep-sea mission on board the submersible C-Explorer 3.11. This time, however, the president’s adventure had a somber tone, as the mission’s target – the wreckage of the Soviet Navy submarine ShCh-308 Syomga (‘Atlantic Salmon’) – had become a mass grave for the vessel’s crew while returning to their base near St. Petersburg during World War II. READ MORE: https://on.rt.com/9yyt RT LIVE https://www.youtube.com/watch?v=IFAcqaNzNSc Check out http://rt.com Subscribe to RT! http://www.youtube.com/subscription_center?add_user=RussiaToday Like us on Facebook http://www.facebook.com/RTnews Follow us on VK https://vk.com/rt_international Follow us on Twitter http://twitter.com/RT_com Follow us on Instagram http://instagram.com/rt Follow us on Google+ http://plus.google.com/+RT Follow us on Soundcloud https://soundcloud.com/rttv #RT (Russia Today) is a global #news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 1 billion YouTube views benchmark.