Deep-sea action

5:40pm, June 6, 2006

Scientists using remotely operated vehicles have reported the first close-up observations of a deep undersea volcano during its eruption.

The peak lies about 60 kilometers northwest of Rota, one of the Western Pacific's Northern Mariana Islands. The base of the volcano, called NW Rota-1, is about 16 km across and lies beneath 2.7 km of water, says Robert W. Embley, a marine geologist at the National Oceanic and Atmospheric Administration in Newport, Ore. The summit, however, rises to within 520 meters of the ocean surface.

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