Every so often a volcano erupts out of the ocean to form a new island. The most famous of these is an island called Surtsey, close to Heimaey off the south coast of Iceland. Since it emerged in 1963 it has been intensively studied by geologists and biologists to investigate rates of erosion and colonisation of new landmasses.
This formation of a new island has happened again, this time off the coast of Japan. Video of the eruption (taken from planes flying over the volcano) clearly show the volcanic processes that have built the volcano to such an extent it has grown above sea level.
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