Chinese submersible Jiaolong
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China's deep water submersible record bid in the Pacific

29 March 2012 Last updated at 22:19 BST

China's manned submersible "Jiaolong" will set off for a 7,000 metres deep dive in the Western Pacific in June.

Named after a mythical aquatic Chinese dragon, it will try to break Japan's deep diving record of more than 6,500 metres.

Marek Pruszewicz reports.

Race to the bottom of the ocean