The eruption from the Showa crater (center) in Sakurajima Volcano, Kagoshima Prefecture, Japan.
Japan Coast Guard
Attribution
Sakurajima, the Database of the Maritime and Submarine Volcanoes (<a rel="nofollow" class="external text" href="http://www1.kaiho.mlit.go.jp/GIJUTSUKOKUSAI/kaiikiDB/kaiyo28-2.htm">Link here</a>).