This one comes from a David Icke site I think. Not sure what I think 
of Icke, overall, but underwater volcanoes certainly are being 
discussed on the net.

Here's another website talking about underwater volcanoes in the context that they are possibly "heating the seas and leading us to an ice age" G quote Tectonic disturbance steadily rising ^ are we headed for a major catastrophe? Many underwater volcanoes erupting simultaneously all over the world ^ Staff Reporter Mar. 14, 2005 When in America Mount St. Helen recently erupted, many thought it was just an isolated normal case of volcanic eruption. But now it is becoming clear that hundreds of underwater volcanoes are erupting all around the world especially around the Pacific Ring of Fire. The tectonic plate movements especially under the oceans have gone up by many times. Andaman Nicobar Island now is experiencing under water volcanoes in Indian ocean and Bay of Bengal. In America North West is experiencing unprecedented level of small earthquakes and under water volcanoes. Seattle and Oregon are experiencing heavy levels of tectonic disturbance. Underwater volcanoes are being reported in Australia, Greece, New Zealand and many other countries. Russia's Kumpchetka peninsula is experiencing double volcanoes of large sizes. According some geologists, there are not enough monitoring mechanisms for knowing the number of under water volcanoes. Most Navies are experiencing changing under water topologies all over the world. The recent American submarine accident caused by under water ridges never mapped before and many other reports from other navies just confirm the fact that there are massive tectonic movements under the oceans that we are not observing. Magma movements under the ocean has increased many folds ^ says Geologists. These developments show the projected under water volcanoes and magma movements have steadily increased in the last five years and now it is just going through the roof. These data do not take into consideration the small less that 4.0 Richter scale earth quakes under the water. Based on a recent study, it is evident that the tectonic movements have gone up by several folds in the last nine months. Many researchers are now concerned about these developments. They are saying the probability of a mega or multiple mega volcanoes is very high now. According to some there is 74,000 year cycle of mega volcanoes and that is due in 2012. For links and graphics.