When Kick-’em-Jenny erupts can you see anything at the surface of the sea?

During the 1939 eruption, witnesses claimed to have seen an eruption column which was ejected about 900 feet above sea level. The volcano has erupted at least 12 times since then but visible surface phenomena have only been observed twice, in 1974 and 1988. On these occasions material was ejected a short distance into the air and the sea bubbled turbulently above the volcano.