This photo shows eruption at a submarine volcano near Iwoto Island, located around 1,200 kilometers south of Tokyo, and a newly discovered island on Aug. 15, 2021. (Courtesy of the Japan Coast Guard)(Kyodo)

       TOKYO (Kyodo) -- A new island has been discovered near Iwoto Island located around 1,200 kilometers south of Tokyo after a submarine volcano began erupting late last week, the Japan Coast Guard said Monday.

       The new island is approximately 1 kilometer in diameter and C-shaped. It was discovered after the volcano some 50 km south of Iwoto in the Pacific's Ogasawara Islands started erupting on Friday.

       The Japan Meteorological Agency has issued warnings about smoke and large ash deposits in nearby waters as an active eruption is expected to continue.

       The coast guard found the newly formed island when it observed the eruption from the air on Sunday, according to the weather agency. Pumice created by the volcanic activity was also found by the coast guard floating across a 60-km area in a northwest direction.

       New islands have been confirmed in the area in 1904, 1914 and 1986, with all having submerged. The one found in 1986 sank after around two months, according to the coast guard.

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