Kammu Seamount

is an underwater volcano (seamount) of the Hawaiian–Emperor seamount chain in the Pacific Ocean. Kammu is an extinct volcano. 
The seamount is also known as the "Kammu 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 Kammu of Japan.
The last eruption from Kammu seamount is unknown.