submarine volcanoes are
volcanoes that happen to be
underwater.
submarine volcanoes are the most
prolific volcanoes in the
world,
ejecting
approximately 75% of the
Earth's entire
annual output of
magma.
the
water around submarine volcanoes classifies the eruptions as
steam-
blast (see
phreatic eruptions/
phreatomagmatic eruptions) eruptions.
water makes these volcanoes act unlike their counterparts on the surface.
lava can flow through the
water and form solid
pillow-like structures unlike formations seen above
water. in some cases, the
lava cools so fast that it shatters (the black
sand beaches of
Hawaii were created almost
instantly by
cool sea water hitting the
super-
hot lava).