The seamount is also known as the "Yūryaku Guyot" because it has a flat top. This undersea geologic feature is also called a "guyot" or "tablemount".
This seabed mountain is named after Emperor Yūryaku of Japan.
The last eruption from Yūryaku seamount was 43 million years ago.
Yūryaku Seamount Facts for Kids. Kiddle Encyclopedia.