Watch Mysteries of the Deep Season HD Full Free on solarmovie.do. Watch Mysteries of the Deep tv series online free. The deep-sea remains a dangerous & unexplored frontier, a place that swallows evidence and where the...The deep-sea remains a dangerous & unexplored frontier, a place that swallows evidence and where the unknown is normal. Jeremy Wade searches for answers behind the world's most iconic & baffling underwater mysteries known to science.