(Fig. 2.19) Submarine Eruption.

     Submarine eruptions occur under the sea chiefly emerging from vents aligned along fissures of mid-ocean ridges.

     Because the volcano lies far beneath sealevel the eruption probably won't even be noticed from the surface.  Because of the pressure of the sea, gases and steam remain in solution which stifles any potential explosions.  The lava will roll down off the slopes quietly in blocks, called pillow-lava.

     If submarine activity continues long enough a volcanic island may emerge.  Volcanic islands, such as Stromboli, Hawaii and Vulcano began their lives as seamounts.  They are particularly common in the South Pacific Ocean.