Fukujin is an active submarine volcano of the Mariana Volcanic Arc that last erupted in 1974. The summit is located about beneath the ocean surface, although in 1977, it was measured at and a shoal depth of was obtained in 1980. No minimum depth has been recorded as the presumably shallow depth poses a risk to ships. It measures across. Volcanic activity in the 1970s is believed to be centered along a southwestern flank vent at depth.
See also Kasuga 2 List of volcanoes in the United States
References