Kaikō (かいこう) was a remote control Japanese deep-sea submarine that sampled bacteria from the ocean floor of the Challenger Deep in the Mariana Trench, the deepest location in the world. On March 2, 1996, Kaikō reached a depth of 10,897 m, marking the deepest dive for an unmanned submersible on record (the Bathyscaphe Trieste still holds the record for deepest dive, made in 1960). Kaikō was lost during Typhoon Chan-Hom in May 2003, when a secondary cable connecting it to the surface broke.

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External links

• http://www.tierramerica.net
• http://www.smarterscience.net

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