北福徳堆

Kita-Fukutokutai is a submarine volcano halfway between the Ioto and Minami-Ioto islands. The volcano rises to within 73 m of the ocean surface. Water discoloration was reported several times beginning in 1937, and floating pumice was seen during 1953-54. In 1988 a fishing boat reported an eruption column about 100 m high, although the report was not confirmed at the time. The Japan Meteorological Agency has classified Kita-Fukutokutai as an active volcano.