Finding a lost World War II submarine 600 meters deep

Finding a shipwreck is harder than you think

NOAA mapping specialist Neah Baechler describes the technical challenge of locating underwater wrecks with multibeam sonar before launching an ROV to inspect the site.

Why Hunting Deep Sea Shipwrecks Is So Hard

The ROV cameras catch sight of an enormous submerged vessel, prompting oceanographers and archaeologists to realize they are staring at an intact submarine.

The Moment Ocean Explorers Spot a Sunken Submarine

The painted hull numbers survived decades underwater

Archaeologist Jim Delgado spots preserved white paint on the conning tower, positively identifying the wreck as the submarine Humaita, originally the USS Muskallunge.

Reading Painted Numbers on a Deep Sea Wreck

Resting six times past its crushing depth

NOAA maritime heritage expert Joe Hoyt explains the war service and 1968 sinking of the submarine, now resting at a staggering 635 meters below the surface.

The WWII Submarine Resting Beyond Its Test Depth

A sunken warship reborn as a coral sanctuary

Deep ocean researchers admire massive, blooming coral colonies and marine life that have turned the conning tower of a sunken warship into an artificial reef.

How a Sunken War Sub Turned into a Coral Reef

[00:22] Why Hunting Deep Sea Shipwrecks Is So Hard
[01:52] The Moment Ocean Explorers Spot a Sunken Submarine
[02:33] Reading Painted Numbers on a Deep Sea Wreck
[03:49] The WWII Submarine Resting Beyond Its Test Depth
[04:21] How a Sunken War Sub Turned into a Coral Reef

Finding a lost World War II submarine 600 meters deep

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