Drain the Oceans: Deep Dive

2019•2 series

Available on Nat Geo HD

Explore a never-before-seen world hidden under miles of water. Join expeditions to recover long-lost vessels, check out ancient sites and follow scientists probing the deepest corners of the seabed.

Episode 5Drain the Sunken War Machines

Sea mines are one naval warfare's most reliable sunken weapons. While many have been swept out of existence, some lie abandoned under the waves. 7+

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