Kasuga, the northernmost of three seamounts in the Kasuga seamount chain (and also known as Kasuga 1), is a conical volcano that rises to within 598 m of the sea surface SE of Fukujin submarine volcano. A series of flank vents are located low on the southern side of the edifice. Delicately preserved flank lava flow lobes suggest a very youthful age, as also seen from the volcano's youthful constructional surface in this NOAA image made without vertical exaggeration. Pumice from a submarine eruption was seen in 1959. Image courtesy of NOAA, 2003 (http://oceanexplorer.noaa.gov/explorations/03fire/logs/mar02/media/kasuga.html).