Seven years after tsunami, Japanese live uneasily with seawalls

When a massive earthquake struck in 2011, Japanese oyster fisherman Atsushi Fujita was working as usual by the sea. Soon after, a huge black wave slammed into his city and killed nearly 2,000 people.

Seven years on, Fujita and thousands like him along Japan's northeast coast have rebuilt their lives alongside huge sea walls that experts say will protect them if another giant tsunami, which some see as inevitable in a seismically active nation like Japan, was to strike.

The 12.5-meter concrete wall replaced a 4-meter breakwater that was swamped in the March 11, 2011 disaster. The earthquake and tsunami, which reached as high as 30 meters in some areas, killed nearly 18,000 people across Japan and triggered a nuclear meltdown at the Fukushima power plant.

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