An a undersea volcano erupts off the
coast of Tonga, tossing clouds of smoke, steam and ash thousands of feet
(meters) into the sky above the South Pacific ocean, Wednesday, March 18,
2009. The eruption was at sea about 6 miles (10 kilometers) from the
southwest coast off the main island of Tongatapu, an area where up to 36
undersea volcanoes are clustered.