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.
Magnitude-5.4 quake hits Japan Saturday morning. Completely flattened houses and rubble were scattered in Mashiki, Kumamoto prefecture on Friday, one day after the magnitude 6.5 earthquake hit southern Japan, killing at least nine people.