Maritime mysteries—old and new—come to life in this series, combining scientific data and digital re-creations to reveal shipwrecks, treasures, and sunken cities on the bottom of lakes, seas and oceans around the world.
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Tony and Phil head beneath the waves to investigate 'the Lost Submarines of World War I'. We trace the development of submarines, from wacky experimental contraptions, to ruthlessly efficient weapons that have permanently changed the nature of naval warfare.
