Non veni pacem mittere, sed gladium.
Some of the scientists are tearing up the old books on volcano behavior and island formation.
On some of the older videos, you could see boiling under the water off the coast. They focused on the steam and lava at the edge, but you could still catch a glimpse of the water being heated quite a ways off the coast.... I'll see if I can find one for you.
lava cone tunnel.