Meteor Volcano (流星火山, Ryūsei Kazan) is a Logia-Cursed Fruit attack from the Magma-Magma Fruit, used by Sakazuki to take out Whitebeard's flagship, the Moby Dick, destroy the ice floor Aokiji created along with the pirates who were standing on it, and also boiled the seawater, scalding anyone who remained in it.
Sakazuki creates a great number of magma fists that he fires into the air in order to let them rain down upon the battlefield, causing enormous amounts of area damage. This looks like a cross between a meteor shower and a volcanic eruption. In the anime, the meteors first fly high into the sky and above the clouds, and then fall back down as though they truly descended from space, the anime also gave a firework's sound during this attack. In the anime, Sakazuki can also use Meteor Volcano as a rapid barrage projectile attack, as seen when he fired it off against Whitebeard.