Iriomote submarine volcano

Submarine volcano in the East China Sea

The Iriomote submarine volcano is an active submarine volcano located 20 km (12 mi) north of Iriomote Island, Japan. The volcano is also known as the Submarine Volcano NNE of Iriomotejima. Its only reported eruption occurred on October 31, 1924—measuring a Volcanic explosivity index (VEI) of 5, it is one of the largest historical eruptions in Japan. However, scientific knowledge about the eruption is sparse.

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