Wikipedia
Myōjin-shō
is a submarine volcano located about 450 kilometers south of Tokyo on the Izu-Ogasawara Ridge in the Izu Islands. Volcanic activity has been detected there since 1869. Since then it has undergone more eruptions, the most powerful of which resulted in the appearance and disappearance of a small island.
The name Myōjin-shō derives from a fishing boat, No.11 Myōjin-Maru of Yaizu City, Shizuoka Prefecture, the crew of which first witnessed the major volcanic eruption of 1952.