In Japan, a massive concrete wall has been erected along its coast, measuring over 12 meters high and extending nearly 400 kilometers. This extensive construction project cost more than US$6.8 billion and is designed to withstand the forces of giant waves that can involve millions of tons of moving water. This new infrastructure replaces older barriers that were rendered ineffective following devastating disasters that destroyed entire cities in northeastern Japan, and it is a critical part of the country's defense system established after the catastrophic tsunami of 2011.

Additionally, as a complementary measure to the concrete wall, Japan has initiated a campaign to plant over nine million trees in strategically chosen areas. This initiative aims to create a natural barrier that can absorb some of the energy from incoming waves and also help mitigate soil erosion in coastal regions. This combination of technological and ecological defenses underscores Japan's commitment to enhancing its preparedness for future tsunami threats.

The construction of this