The world's seas are a deep resource of unresolved mysteries-- from ships that vanish without a trace to unexplained undersea anomalies to an extremely infection showing up along Florida's coast. In host Jeremy Wade searches for responses behind the world's most baffling and legendary underwater enigmas recognized to science. The deep-sea remains a undiscovered as well as dangerous frontier-- an area that swallows evidence and where the unknown is normal. Jeremy tackles his greatest journeys yet and also will certainly stop at nothing to locate answers.