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Nature 423, 469 (29 May 2003) |

Deep-sea sub aims to get to the bottom of a muddy issue

Quirin Schiermeier

Europe's most advanced ocean-research robot set out for an 11-week Arctic expedition last week, its most ambitious to date. Researchers hope that Victor 6000, one of the few craft that can reach depths of six kilometres, will provide insights into deep-sea corals and giant carbonate mounds — mud formations that can reach hundreds of metres in height.