As news spread that a submersible craft taking visitors down to the wreckage of famed Titanic has imploded, experts at a Phoenix area school that trains students on how to work under the ocean describe the extreme conditions, as well as dangers, that people face when they travel thousands of feet below the surface.
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Titanic Submersible
Crews have found the wreckage of a submersible that vanished on an expedition to the wreck of the Titanic, with all five onboard killed.