Abundant evidence indicates that such a new volcano exists at L'ihi, a seamount (or submarine peak) located about 20 miles off the south coast.
In 2011, a 9.0-magnitude earthquake -- one of the worst ever to hit Japan -- killed more than 20,000 people and caused tsunamis of up to 12 meters (40 feet) which swamped the Fukushima Daiichi nuclear power plant, triggering a nuclear meltdown. Fukushima resident: We live in fear.
(CNN)Here's a look at the earthquake and tsunami that struck Japan in March of 2011. March 11, 2011 - At 2:46 p.m., a 9.0 magnitude earthquake takes place 231 miles northeast of Tokyo at a depth of 15.2 miles. The earthquake causes a tsunami with 30-foot waves that damage several nuclear reactors in the area. It is the fourth-largest earthquake on record (since 1900) and the largest to hit Japan.