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Ocean explorers filmed the world's
known shipwreck for the first
. The World War II battleship, the USS Johnston, was sunk by the Japanese
in 1944. The shipwreck is
on the ocean
, around 6,456 metres deep. The film
went down to that incredible
and darkness in a submersible that can deal with the
of the deep ocean. The
took place during two eight-hour
.
