The deepest part of the ocean was found in 1951 by the surveys ship Challenger. Echo-
Surroundings showed part of Mariana Trench , south of Japan, to be 10,900 metres deep.
In 1960 the US Navy bathyscaphe Trieste decended to the bottom of the Challenger Deep. The Mariana Trench is one of many deep trenches around the edges of the pacific Ocean. These V- Shaped trenches are parallel to a continent or line of islands.
Surroundings showed part of Mariana Trench , south of Japan, to be 10,900 metres deep.
In 1960 the US Navy bathyscaphe Trieste decended to the bottom of the Challenger Deep. The Mariana Trench is one of many deep trenches around the edges of the pacific Ocean. These V- Shaped trenches are parallel to a continent or line of islands.
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